All you need to know about boss Undertale [Complete Guide].

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In this article, I present the complete list of Bosses on Undertale and explains how to beat them.

The game is in English by default, but it is possible to put Undertale in French.

Disclaimer: Risque de spoil si vous n’avez pas encore joué au jeu !

Complete list of boss on Undertale

Ruins (Ruins)

The Ruins have a mini-boss and a main boss.

Napstablook

Napstablook is the first mini-boss sur Undertale. C’est un fantôme endormi que vous rencontrerez dans les Ruines.

Capture from the game Undertale, showing Napstablook lying on the ground.
Capture from Undertale, showing Napstablook lying on the ground. ©️ Karen for Alucare.fr

Talk to the ghost and choisissez de l’écarter avec force to start the fight with Napstablook.

Napstablook's attacks take the form of tears.
Napstablook's attacks take the form of tears. ©️ Karen for Alucare.fr

Le combat contre Napstablook est inévitable, mais pas difficile. Au début, ses larmes tombent tout droit. Vous n’aurez it's easy to dodge them by staying in the lower part..

Screenshot from the Undertale game, showing possible actions against Napstablook.
Capture from the game Undertale, showing possible actions against Napstablook. ©️ Karen for Alucare.fr

Choisissez d’encourage Napstablook 3 times in a row before the fight is over.

When her tears become more rounded, they are easier to avoid by staying close to the center.

Once the fight is over, Napstablook s’écartera de votre chemin and you can move on to Undertale.

Toriel


This screenshot shows Toriel blocking your access to the next zone on Undertale.
Cette capture montre Toriel qui vous empêche d’accéder à la prochaine zone sur Undertale. ©️ Karen pour Alucare.fr

Kill Toriel

If you decide to kill her, touching it once will kill it. Son discours dépendra ensuite de la manière dont vous l’aurez tué.

Example : Si vous la tuez après l’avoir épargné, elle dira que vous êtes tout aussi cruel que le reste des monstres et meurera en riant.

Saving Toriel

On the other hand, boss's battle with Toriel will take some time if you décidez de l’épargner.

Choose "Clémence" to be able to select the "Save" option against Toriel.
Choisissez “Clémence” pour pouvoir choisir l’option “Épargner” contre Toriel. ©️ Karen pour Alucare.fr

Toriel is a boss with four different attacks :

  1. Fire falls from the top of the box: Stay in the middle of the box to dodge.
  2. A propeller of fire spins downward: Likewise here, stay in the center.
  3. Hand sweep Move to the bottom center of the box, then around the edges once the flames follow you.
  4. Two-handed sweep Start at the center and move out to the sides.

Disclaimer: Toriel doesn't want to hurt you. If your health is low, her attacks will become less precise.

Après avoir constamment épargné Toriel au lieu de l’attaquer, elle commencera à vous parler. Continuez à l’épargner et elle vous laissera passer.

Go through the doors, up the long corridor and you'll meet Flowey again.

Capture from the game Undertale, showing your meeting with Flowey before going through the front door.
Capture from Undertale, showing your meeting with Flowey before going through the front door. ©️ Karen for Alucare.fr

Il vous confirmera si vous avez tué quelqu’un ou non et vous narguera. Sortez par les grandes portes et you will move on to the next zone.

Couveneige (Snowdin)

Couveneige (Snowdin) is the second zone. It comprises a few mini-bosss and a main boss.

Doggo

Not far from the first zone, you'll see a big box.

This shot shows Doggo appearing once you're close enough.
This capture shows Doggo appearing once you get close enough. ©️ Karen for Alucare.fr

Coming up ahead, a dog will come out en disant qu’il ne peut voir que les choses qui bougent. Cela déclenchera un combat de mini-boss avec Doggo.

Facing Doggo on Undertale, don't touch anything. Just wait for the blue attack to go through you.
Face à Doggo sur Undertale, ne touchez à rien. Attendez simplement que l’attaque bleue vous traverse. ©️ Karen pour Alucare.fr

L’astuce avec l’attaque de Doggo is of stand still and it won't hurt you.

You have the possibilité de l’épargner ou de le tuer.

Saving Dogo

  1. Choose to stroke Doggo and remain motionless while awaiting his attack.
  2. Une fois qu’il a été caressé, son nom devient jaune, ce qui indique que vous pouvez maintenant l’épargner.
When it's your turn, choose "Action" then "Pet".
Lorsque c’est votre tour, choisissez “Action” puis “Caresser” (Pet). ©️ Karen pour Alucare.fr

Kill Doggo

  1. Attack Doggo and stand still in the face of his counter-attacks.
  2. You'll probably need to two or more attacks to kill Doggo.

Remark : You can always choose to stroke it to get a special dialogue before killing it.

After this altercation, continuez votre aventure sur Undertale vers l’est.

Dogamy & Dogaressa

A little further on, you meet two dogs holding axes. They are Canisse and Canibelle (Dogamy & Dogaressa). The fight will take place because of your smell.

Capture from the game Undertale, showing two dogs each holding an axe.
Capture from the game Undertale, showing two dogs each holding an axe. ©️ Karen for Alucare.fr

Attacks will take the form of rotating blue and white hearts. Esquivez-les ou placez-vous à l’endroit où les cœurs bleus atterriront and stand still.

White and blue hearts will come from both sides as you face two dogs in Undertale.
White and blue hearts will arrive on both sides as you face two dogs in Undertale. ©️ Karen for Alucare.fr

Kill Dogamy & Dogaressa

You can kill them. You'll probably have to at least two shots to kill each dog. Une fois l’un d’eux vaincu, l’autre deviendra plus agressif.

Saving Dogamy & Dogaressa

Par contre, si vous décidez d’épargner Canisse et Canibelle, vous devrez perform certain actions lorsque c’est votre tour.

Capture from the Undertale game, showing possible actions against Dogamy and Dogaressa.
Capture from the game Undertale, showing possible actions against Canisse and Canibelle. ©️ Karen for Alucare.fr
  1. start with choisir l’action “Rouler” pour changer votre odeur.
  2. Choose ensuite l’action « Renifler » so that dogs discover your new scent.
  3. You must then stroke the two dogs to spare them.

Attention : Between caresses, they'll launch a big axe attack that will be harder to dodge, so be careful.

Étonnés d’apprendre que les chiens peuvent caresser d’autres chiens, Canisse et Canibelle vous laissent continue south.

Greater Dog

After going through a zone with a niche and lots of snowballs, l’une de ces boules de neige vous bloquera le chemin.

Capture from Undertale, showing Greater Dog hidden in the last snowball.
Capture from Undertale, showing Greater Dog hidden in the last snowball. ©️ Karen for Alucare.fr

Once you're close enough to the snowball, Maxichian (Greater Dog) will appear.

Capture from the game Undertale, showing Greater Dog's appearance in combat.
Capture issue du jeu Undertale, montrant l’apparence de Greater Dog en combat. ©️ Karen pour Alucare.fr

Maxichien attacks are two different types :

  • La première attaque est une lance qui se déplace à travers l’écran, elle passe du blanc au bleu. Essayez donc de rester immobile et de la laisser passer lorsqu’elle est bleue.
  • Les autres attaques sont des « aboiements » provenant d’un chien qui roupille, stay high and keep moving to dodge them.

Kill Greater Dog

If you decide to kill Greater Dog, vous devez l’attaquer deux ou trois fois pour mettre fin au combat.

Saving Greater Dog

Par contre, pour l’épargner vous devez agir dans l’ordre suivant :

Capture from the Undertale game, showing possible actions against Great Dog.
Capture from the game Undertale, showing possible actions against Greater Dog. ©️ Karen for Alucare.fr
  1. Beckon (waving)
  2. Pet (Caresser)
  3. Play (Play)
  4. Pet (Caresser)
  5. Pet (Caresser)

By performing these actions correctly, you can save Greater Dog.

Once you have defeated Maxichien, you can continuer vers l’est en traversant un long pont.

Papyrus

Papyrus is the boss this zone's mainand you'll have to fight him if you want to leave the town of Couveneige (Snowdin).

Screenshot from Undertale, showing your encounter with Papyrus.
Capture from Undertale, showing your encounter with Papyrus. ©️ Karen for Alucare.fr

His first attack will make your blue soul, ce qui signifie qu’elle est désormais affectée par la gravité et qu’elle descendra au sol.

After your first turn and Papyrus' blue attack, your soul will turn blue.
Après votre premier tour et l’attaque bleue de Papyrus, votre âme deviendra bleue. ©️ Karen pour Alucare.fr

You can jump and move with the arrow keysso use them to dodge his attacks.

Remark : This fight can be tough, but if you lose, you don't die and you can come back and try again. If you lose three times, you can skip the fight.

Killing Papyrus

Papyrus has a lot of PV and you'll take du temps pour le tuer ou pour l’épargner.

If you make him lose HP, il vous proposera de vous épargner à la place. C’est à vous de décider si vous voulez l’épargner ou le tuer.

Save Papyrus

Screenshot from the Undertale game, showing the actions you can take to save Papyrus.
Capture issue du jeu Undertale, montrant les actions possibles face à Papyrus avant de pouvoir l’épargner. ©️ Karen pour Alucare.fr

Flirtez avec lui et continuez à l’épargner jusqu’à ce que toutes ses attaques soient terminées.

Once the fight is over, Papyrus will ask you a question before letting you through.

The Falls (Waterfall)

In Undertale, the Chutes (Waterfall) have only two bossBut the fight against Undyne will recur several times during your visit.

Undyne phase 1

Making your way through the area, you'll come to a jetty. You'll suddenly be attacked by a spear and Undyne will appear.

After attacking with her first spear, Undyne will appear and continue to attack you all along the pier.
After attacking with her first spear, Undyne will appear and continue to attack you all along the pier. ©️ Karen for Alucare.fr

You will then enter into a battle with her where you will have to dodging spears in the combat phase and along the pier.

Capture from Undertale, showing the combat phase after being hit by an Undyne spear on the pier.
Capture issue du jeu Undertale, montrant la phase de combat après avoir été touché par une lance d’Undyne sur la jetée. ©️ Karen pour Alucare.fr

Continuez à vous diriger vers l’est. Si des lances vous touchent à nouveau, vous serez de nouveau en mode combat pour l’une de ses attaques.

Le meilleur moyen d’esquiver les lances est de continuer à se diriger vers l’est. Faites take care when moving up or downYou can easily find yourself in the path of the spears.

Capture from the Undertale game, showing the reeds that will enable you to hide from Undyne.
Capture issue du jeu Undertale, montrant les roseaux qui vous permettront de vous cacher d’Undyne. ©️ Karen pour Alucare.fr

You'll once again find reeds in which you can hide and won't be able to move for a short scene.

Capture from the game Undertale, showing a save point after escaping from Undyne.
Capture from Undertale, showing a save point after running away from Undyne. ©️ Karen for Alucare.fr

Attention : La zone suivante est un point de sauvegarde, alors n’oubliez pas de le faire avant de continuer.

Undyne phase 2

Further on, you'll find yourself once again on a jetty. But this time.., le sol s’illuminera et des lances s’élèveront from these points.

Capture from the Undertale game, showing Undyne's repeated attacks.
Capture issue du jeu Undertale, montrant les attaques répétées d’Undyne. ©️ Karen pour Alucare.fr

Keep moving in a general south-easterly direction, but your chemin sera quelque peu déterminé par les attaques d’Undyne. Vous finirez par arriver au bout de la jetée et les lances s’arrêteront.

Capture from the game Undertale, showing a cutscene with Undyne before your fall.
Capture from Undertale, showing a cutscene with Undyne before your fall. ©️ Karen for Alucare.fr

Turn around and retrace your steps to face Undyne before falling into the depths.

Mad Dummy

As you try to climb out of the sewers you've fallen into, vous serez arrêté par un mannequin d’entraînement.

Once in this zone, you can ignore the dummy even after interacting with it. It will manifest itself.
Once in this zone, you can ignore the dummy even after interacting with it. It will manifest itself. ©️ Karen for Alucare.fr

Remark : Whatever end you wish to achieve, the method is the same.

To beat Dummy in Undertale, all you need to do is let his dummies' attacks hit him.
To beat Dummy in Undertale, all you need is for his models' attacks to hit him. ©️ Karen for Alucare.fr

Mad Dummy will attack you through the attacks of his dummy friends. The projectiles will follow youThis means you can direct them as far as possible in the direction he's facing to inflict damage.

Sachez que le projectiles de type fusée doivent faire un tour avant de pouvoir s’envoler pour frapper Dummy, SO direct them accordingly.

Lorsqu’il aura subi suffisamment de dégâts, votre vieux compagnon Napstablook will appear and put an end to the battle.

Napstablook's tears hit Mad Dummy, putting an end to the fight.
Napstablook's tears hit Mad Dummy, ending the fight. ©️ Karen for Alucare.fr

Follow Napstablook north to have another chance to save before continuing.

Undyne

boss's battle with Undyne takes place at the end of Chutes levelwhen you arrive at the mountain.

Undyne reveals her appearance for the first time in Undertale.
Undyne reveals her appearance for the first time in Undertale. ©️ Karen for Alucare.fr

After the cutscene, you can save your progress before fighting Undyne.


Undyne will make your green heart, ce qui signifie qu’il ne peut pas bouger. Ensuite, elle vous enverra des flèches.

As soon as the fight against Undyne begins, your heart will turn green because of her intervention.
As soon as the fight starts against Undyne, your heart will turn green because of her intervention. ©️ Karen for Alucare.fr

Vous disposez d’une capacité de blocage sous la forme d’une ligne bleue. This blue line must point in the direction of the arrows to avoid damage.

Capture from the Undertale game, showing the ability to block when you're in a green heart.
Capture from the game Undertale, showing the ability to block when you're in a green heart. ©️ Karen for Alucare.fr

Sometimes arrows are yellow, ce qui signifie qu’elles viennent de la direction opposée.

When your heart is red, you must agir comme d’habitude et esquiver les lancesas on previous occasions when you met her.

Undyne can turn your heart red and you'll have to act as usual.
Undyne peut rendre votre cœur rouge et vous devrez agir comme d’habitude. ©️ Karen pour Alucare.fr

Killing Undyne

Constantly attack Undyne et ne choisissez pas de fuir. Une fois que sa santé est à zéro, elle sera déterminée à continuer d’attaquer et à essayer de survivre.

His attacks will become slow and easy to avoid, and vous pourrez l’achever.

Save Undyne

Once your heart is red, you have the possibility of escape and she'll come after you, so get back into the tunnel quickly.

As soon as your heart turns red again in front of Undyne, take the opportunity to flee!
As soon as your heart turns red again in front of Undyne, take the opportunity to run away! ©️ Karen for Alucare.fr

Undyne will catch up with you and you'll have to survive its attack to escape again and keep running.

Capture from Undertale, showing some of Papyrus's dialogue during the call as you flee Undyne. ©️ Karen for Alucare.fr
Capture issue du jeu Undertale, montrant une partie des dialogues de Papyrus pendant l’appel alors que vous fuyez Undyne. ©️ Karen pour Alucare.fr

Papyrus will call you pendant ce temps. Pas de panique, Undyne ne s’approchera pas pendant que vous êtes en train d’appeler.

After a long horizontal corridor, you come to a desert area.

Ignore Sans and cross the bridge where Undyne will collapse.
Ignorez Sans et traversez le pont où Undyne s’effondrera. ©️ Karen pour Alucare.fr

Si vous voulez privilégier la Route Pacifiste ou vous lier d’amitié avec elle ou Papyrus, vous devez lui apporter une tasse d’eau de la glacière.

Choose "Yes" to give water to Undyne.
Choisissez “Oui” pour donner de l’eau à Undyne. ©️ Karen pour Alucare.fr

Undyne will get up and leave immediately après que vous l’ayez fait.

Remark : La tuer ou l’épargner vous fera passer par un nombre similaire de rounds.

Calciterre (Hotlands)

In Calciterre (Hotlands), you will meet some boss, dont le plus remarquable est Mettaton. Vous devrez l’affronter plusieurs fois de différentes manières.

Mettaton test 1

Your first encounter with Mettaton will take place in the laboratorywhile you're talking to Dr. Alphys.

This screenshot shows your first meeting with Dr Alphys on Undertale.
This screenshot shows your first meeting with Dr Alphys on Undertale.

Alors qu’elle vous explique que son robot pourrait causer des problèmes, celui-ci apparaît dans la pièce et commence une sorte de quiz battle.

Screenshot from Undertale, showing your first encounter with Mettaton in the laboratory.
Capture from Undertale, showing your first encounter with Mettaton in the laboratory. ©️ Karen for Alucare.fr

the Dr Alphys will show you the answers with his handsso keep an eye on her.

For this question, Dr Alphys shows you that the correct answer is D.
For this question, Dr Alphys shows you that the correct answer is D. ©️ Karen for Alucare.fr

The answers are: D, C, B, D, A, D, n’importe laquelle et C.

For the last question, the Mettaton's speech and Dr Alphys' reaction will change depending on the answer you choose.


Remark : Pendant votre tour, vos actions n’auront aucun effet sur Mettaton.

Once the battle is over, Mettaton will leave and the Dr Alphys will update your phone and sign you up to a social network, whether you like it or not.

Continuez vers l’est and leave the laboratory.

Mettaton test 2

After a series of puzzles and updates from Dr. Alphys, you'll eventually arrive in a dark area.

Capture from Undertale, showing your second meeting with Mettaton for his cooking show. ©️ Karen for Alucare.fr
Capture from Undertale, showing your second meeting with Mettaton for his cooking show. ©️ Karen for Alucare.fr

Dr Alphys piratera les lumières pour qu’elles s’allument et vous découvrirez que vous êtes dans une cooking show with Mettaton.

Tout d’abord, vous devez rassemble the ingredients behind you.

Capture from the game Undertale, showing the ingredients needed to make the cake: eggs, milk and sugar.
Capture from the game Undertale, showing the ingredients needed to make the cake: eggs, milk and sugar. ©️ Karen for Alucare.fr

Tip: You can carry them all at once, so take them all and bring them back.

Let the scene unfold for a while and you'll find yourself with a jetpack for climbing an incredibly high piece of furniture. Votre objectif est d’obtenir un extrait d’âme humaine de substitution.

Capture from the Undertale game, showing gameplay with the jetpack and the ingredients Mettaton drops on your character.
Capture from Undertale, showing gameplay with the jetpack and the ingredients Mettaton drops on your character. ©️ Karen for Alucare.fr

A stopwatch starts and you must dodging ingredients that Mettaton drops above you. Don't panic, there's plenty of time to reach the top.

Capture from the game Undertale, showing the save point after Mettaton's second trial.
Capture from Undertale, showing the save point after Mettaton's second trial. ©️ Karen for Alucare.fr

Mettaton will leave at that point and you can continuer vers l’est jusqu’à un nouveau point de sauvegarde.

Royal Guards

Avant d’affronter à nouveau Mettaton, vous serez interrupted by Royal Guards (Royal Guards) qui sont censés vous protéger de l’Humain.

Capture from Undertale, showing your encounter with the Royal Guards at Calciterre.
Capture from Undertale, showing your encounter with the Royal Guards at Calciterre. ©️ Karen for Alucare.fr

Du moins c’est ce qui était prévu jusqu’à ce qu’ils réalisent que vous êtes l’Humain et qu’ils commencent un boss mini-combat.

Capture from the game Undertale, showing the start of the battle with the Royal Guards.
Capture from Undertale, showing the start of the fight against the Royal Guards. ©️ Karen for Alucare.fr

Bien qu’il ne soit pas difficile, ce combat face aux Royal Guards is quite specific. It will be difficult for you to find the right combination to save them quietly.

Once you're facing the Royal Guards on Undertale, you can choose to act on RG 01 or RG 02.
Une fois face aux Gardes Royaux sur Undertale, vous pourrez choisir d’agir sur RG 01 ou RG 02. ©️ Karen pour Alucare.fr

Choisissez d’act on RG 02 first to clean its armor. Cela présentera une longue zone de combat verticale avec une pièce d’armure verte flottante.

Capture from the game Undertale, showing the green armor to be cleaned by repeatedly passing your red heart over it.
Capture issue du jeu Undertale, montrant l’armure verte à nettoyer en passant plusieurs fois votre cœur rouge dessus. ©️ Karen pour Alucare.fr

Remark : If you don't do it enough times, you'll have to clean it again.

Après avoir nettoyé l’armure, vous devez choisir RG 01 et sélectionner l’action “Chuchoter” (Whisper).

Capture from the Undertale game, showing possible actions against the Royal Guards.
Capture from the game Undertale, showing possible actions against the Royal Guards. ©️ Karen for Alucare.fr

He'll confess his feelings to R2 and you can spare the Royal Guards pour qu’ils puissent partir manger une glace, ce qui mettra fin à la bataille.

N’hésitez pas à revenir au point de sauvegarde pour récupérer de la santé, sinon keep going all the way jusqu’à une autre pièce sombre.

Mettaton test 3

After Dr. Alphys turns the light back on, you discover that you're in a another Mettaton TV show. This time, it seems you're a journalist on the spot.

Capture from the game Undertale, showing the Mettaton TV show where the player is a live journalist.
Capture from the game Undertale, showing the Mettaton TV show where the player is a live journalist. ©️ Karen for Alucare.fr

Une fois que vous êtes en mesure d’agir, déplacez-vous jusqu’au premier objet que vous trouverez. If you go up a little to the right, you'll find a basketball.

Capture from the game Undertale, showing part of Mettaton's speech after selecting the basketball.
Capture from the game Undertale, showing part of Mettaton's speech after selecting the basketball. ©️ Karen for Alucare.fr

Remark : N’importe quel objet convient, car il s’agit en réalité de bombes. Un chronomètre s’enclenche, mais ne vous inquiétez pas, il ne peut pas atteindre zéro.

You must now désamorcer toutes les bombes à l’aide de l’application du Dr Alphys installed on your phone.

Capture from the Undertale game, showing the moment when the Dog was successfully defused.
Capture from Undertale, showing the moment when the Dog was successfully defused. ©️ Karen for Alucare.fr

Interact with an object and then appuyez sur le bouton “Désamorcer la bombe” lorsque l’objet est dans la zone et devient vert.

A good way to defuse them all at once is to follow this path :

  1. Go to the bottom and then to the left after the lasers to defuse the bomb.
  2. Then retrace your steps and turn right to get on the conveyor belt to disarm the script.
  3. Go straight ahead and jump to defuse the gift.
  4. Jump left to defuse the basketball.
  5. Finally, return to the center pour désamorcer le verre d’eau que le Dr Alphys a stabilisé sur place afin que vous puissiez finir le travail.

Mettaton partira une fois l’opération terminée, vous pourrez donc continuer à vous diriger vers l’est.

Muffet

Après une vente de pâtisseries aux araignées, vous arriverez à un couloir d’araignées où vous serez coincé dans une toile épaisse, dans laquelle Muffet vous a piégé.

Screenshot from Undertale, showing your encounter with Muffet at Calciterre.
Capture from Undertale, showing your encounter with Muffet at Calciterre. ©️ Karen for Alucare.fr

This battle can take place from different ways, selon ce que vous avez fait jusqu’à présent.

  • Si vous avez dépensé assez d’argent pour acheter une friandise arachnéenne à Calciterre, vous n’aurez même pas à faire le combat et serez simplement libéré.
  • If you still have your Ruins delicacy, choisissez d’agir et de la manger devant elle. Elle vous accusera de vol jusqu’à ce qu’elle reçoive un télégramme des araignées des Ruines, ce qui mettra fin à la bataille.
  • Si vous n’avez pas de friandiseIf you opt for the Pacifist Route, your battle with Muffet becomes more difficult.

Muffet will make your purple heart, ce qui signifie que vous ne pourrez vous déplacer qu’en vous accrochant à l’une des trois lignes.

Capture from Undertale when Muffet turns your heart purple.
Capture from Undertale when Muffet turns your heart purple. ©️ Karen for Alucare.fr

Muffet owns trois types d’attaques. She will send :

  1. Regarding the spiders along these lines to attack you.
  2. Regarding the doughnuts which will bounce around your combat zone.
  3. Regarding the croissants that will come back like a boomerang.
Capture from the game Undertale, showing the spiders to avoid during your fight against Muffet.
Capture from Undertale, showing the spiders to avoid during your fight against Muffet. ©️ Karen for Alucare.fr

Sometimes, his pet appears and chases you upwards, while you must always avoid the spiders.

Capture from the game Undertale, showing the combat phase against Muffet's pet.
Capture issue du jeu Undertale, montrant la phase de combat contre l’animal de compagnie de Muffet. ©️ Karen pour Alucare.fr

Once you have succeeded in avoid your pet during the third roundMuffet will let you go and the fight will end. If not, you can continue fighting to defeat her.

Continue on your way à l’est.

Mettaton test 4

You will arrive at a kind of castle Mettaton will appear. He'll start singing a romantic song about how you have to die before you fall into a hole.

Capture from the game Undertale, showing Mettaton descending the stairs before starting to sing.
Capture from Undertale, showing Mettaton coming down the stairs before starting to sing. ©️ Karen for Alucare.fr

For the next puzzle, Dr. Alphys will be on hand to help you at the last secondWhatever your success, Mettaton will fight you.

Capture from the game Undertale, showing the final test before your battle with Mettaton.
Capture from Undertale, showing the last test before your fight against Mettaton. ©️ Karen for Alucare.fr

Dr Alphys vous appellera au milieu du combat et vous dira d’press the yellow button on your phone.

Capture from the Undertale game, showing the Yellow button in the Action menu as indicated by Dr Alphys.
Capture issue du jeu Undertale, montrant le bouton Jaune dans le menu Action comme l’a indiqué le Dr Alphys. ©️ Karen pour Alucare.fr

Choisissez l’option Action (Act) to do it, then several shots for Mettaton et il s’enfuira.

Your heart will turn yellow and you'll be able to shoot Mettaton several times, following Dr Alphys' instructions.
Your heart will turn yellow and you will be able to shoot Mettaton several times following Dr Alphys' instructions. ©️ Karen for Alucare.fr

After another telephone conversation with Dr. Alphys, continuez vers l’est, puis vers le nord pour atteindre l’hôtel MTT.

The Core (The Core)

Il n’y a qu’un single combat of boss qui vous attend sur place et il s’agit de nul autre que Metatton.

Mettaton

Avant d’affronter Mettaton, n’oubliez pas de save your progress.

Capture from the game Undertale, showing a save point outside Mettaton's room.
Capture from Undertale, showing a save point outside the room where Mettaton is located. ©️ Karen for Alucare.fr

Mettaton vous révélera quelque chose d’assez bizarre à propos du Dr Alphys avant de take you into battle where she can't help you.

Capture from the game Undertale, showing part of Mettaton's speech before going into battle.
Capture from Undertale, showing part of Mettaton's speech before going into battle. ©️ Karen for Alucare.fr

At the start of the fight, you will have a yellow heart qui tire, mais vos balles n’endommageront pas du tout le robot. Au lieu de cela, vous pouvez les utiliser pour éviter que ses attaques ne vous touchent.

Use your yellow heart to shoot the squares falling towards you.
Take advantage of your yellow heart to shoot the squares falling towards you. ©️ Karen for Alucare.fr

You can only shoot squares with a circle to destroy them or on yellow objects to move them.

Squares with a circle and yellow objects can be shot at during your fight with Mettaton.
Squares with a circle and yellow objects can be shot at during your fight with Mettaton. ©️ Karen for Alucare.fr

Dr Alphys will call you informer de la présence d’un interrupteur in Mettaton's back.

Capture from the Undertale game, showing the switch to press once Mettaton has turned around.
Capture issue du jeu Undertale, montrant l’interrupteur sur lequel appuyer une fois que Mettaton s’est retourné. ©️ Karen pour Alucare.fr

Choisissez “Action” puis “Retourner” pour convaincre Mettaton de se mettre à dos, puis cliquez sur l’interrupteur.

Mettaton EX

Après avoir appuyé sur l’interrupteur, Mettaton will become Mettaton EX et un graphique apparaîtra sur le côté, montrant l’Audimat.

Capture from the Undertale game, showing the appearance of Mettaton EX.
Capture issue du jeu Undertale, montrant l’apparence de Mettaton EX. ©️ Karen pour Alucare.fr

Remark : If you die while fighting Mettaton EX, you'll come back when he transforms.

Your goal is to faire monter l’Audimat à 12 000, and there are several options for achieving this.

Screenshot from the Undertale game, showing possible actions against Mettaton EX.
Capture from Undertale, showing possible actions against Mettaton EX. ©️ Karen for Alucare.fr
  • Show off (Boast) est un bon choix si vous avez confiance en votre capacité à esquiver les attaques. Cette action vous permettra également d’augmenter l’Audimat plus rapidement.
  • Put down (Pose) est un bon choix de base qui vous permettra d’augmenter régulièrement votre cote.
  • Playing the Bad Guy (Heel Turn) will earn you points every time you take damage.
  • Tackle vous permettra d’obtenir environ 300 points à chaque tour.

To dodge his leg attacksyou must :

  • Pulling on white legs to get them moving.
  • Pull on the yellow legs juste avant d’entrer en contact avec elles.

Another attack sends up bombs and mini-Mettatons. Shooting bombs will help you eliminate them. The surviving mini-Mettatons will throw hearts at you.

Remark : If you shoot a bomb, it will explode in a large cross, so you'll need to move away from it immediately afterwards.

As soon as you can, shoot the heart of Mettaton EX!
As soon as you can, shoot the heart out of Mettaton EX! ©️ Karen for Alucare.fr

His heart attack triggers lightning bolts. You must dodge them and pull on his heart pour mettre fin à l’assaut.

Remark : Pensez à faire des réserves de nourriture afin de vous soigner. Plus la nourriture est chère, mieux c’est. À chaque fois que vous mangez de la nourriture « de marque », le public l’apprécie davantage en fonction de son prix.

More later, knives will also appear on the sides of your box during his heart attack.

For the disco ball, pulling it will change the lasers from white to blue on Undertale.
For the disco ball, pulling it will change the lasers from white to blue on Undertale. ©️ Karen for Alucare.fr

Pull on the disco ball and avoid moving when the lasers turn blue.

Once you have reached 12,000 Audimat, Mettaton EX will start receiving phone calls from fans. Il se rendra compte qu’il ne veut plus se battre ou que sa santé est épuisée.

Capture from the game Undertale, showing an example of a call received by one of Mettaton EX's fans.
Capture issue du jeu Undertale, montrant un exemple d’appel reçu par l’un des fans de Mettaton EX. ©️ Karen pour Alucare.fr

Le combat se terminera et le Dr Alphys s’approchera, et elle sera soulagée qu’il ne soit pas mort ou agira comme s’il n’y avait pas de problème si vous l’avez tué.

From here, you can move on to the next zone.

Mettaton Neo

If you follow the Genocide RoadMettaton will explain that you are a threat to all life, not just monsters. He concludes that you must be eliminated.

Capture from the game Undertale, showing part of Mettaton's speech if you've decided to kill everyone.
Capture from Undertale, showing part of Mettaton's speech if you've decided to kill everyone. ©️ Karen for Alucare.fr

Mettaton se will be transformed into a Mettaton Neo to confront you.

Capture from the Undertale game, showing Mettaton Neo with 90 ATQ and only 9 DEF.
Capture from Undertale, showing that Mettaton Neo has 90 in ATQ and only 9 in DEF. ©️ Karen for Alucare.fr

Remark : La seule “Action” que vous pourrez effectuer est “Examiner”, ce qui vous révèlera les statistiques de Mettaton Neo.

To beat it, simply touch it once.

Once the fight is over, you can move on to the next zone.

New House (New Home)

Depending on your background, Nouvelle Maison (New Home) can be your last zone on Undertale. Warning, spoilers!

Asgore

On arriving in the throne room, vous rencontrerez Asgore. D’abord dos à vous, il vous demandera de patienter le temps d’arroser les fleurs.

Screenshot from Undertale, showing your encounter with Asgore in the throne room.
Capture from Undertale, showing your encounter with Asgore in the throne room. ©️ Karen for Alucare.fr

Surprised when he sees you, he'll end up smiling and then will ask you to follow him when you're ready.

Remark : Vous aurez la possibilité de sauvegarder votre progression plusieurs fois avant d’affronter Asgore.

The first thing Asgore does is to détruire votre bouton “Clémence” (Mercy). You have to fight it whether you like it or not.

You can talk to Asgore three times to reduce its attack and defense.

You can also lower its attack and defense if you still have the Toriel pie with you. Just eat it in front of him.

Screenshot from the Undertale game, showing possible actions against Asgore.
Capture from the game Undertale, showing possible actions against Asgore. ©️ Karen for Alucare.fr

Remark : Sachez qu’Asgore ne fera jamais tomber vos PV à 1 en un seul tour. Il vous laissera une chance de vous soigner. Si vous ne vous soignez pas, il peut vous tuer lors de sa prochaine attaque.

Les attaques d’Asgore sont très similaires à celles de Toriel, mais il y a some differences and new movements :

  • First attack: Des flammes sortent de deux mains. Esquivez-les en dirigeant les flammes et en vous assurant toujours d’avoir une sortie.
  • Second attack:  Flames wave downwards. Try to stay close to the center to dodge them.
  • Third attack: Une petite quantité de flammes tombera, et un avertissement apparaîtra de chaque côté sous forme de point d’exclamation rouge. Assurez-vous de passer de l’autre côté avant qu’il ne se remplisse de flammes.
  • Fourth attack: Ses yeux clignoteront en fonction de la couleur de la faux avant qu’il n’attaque. Cette attaque peut être assez rapide :
    • Blue : Don't move.
    • Red : Move immediately after the previous shot to avoid attacks.
  • Fifth attack: Une autre de ses attaques prend la forme d’un anneau de flammes. Il se referme autour de vous, avec une petite ouverture. Ne vous éloignez pas trop du centre lorsque vous vous échappez.
Capture from the Undertale game, showing the combat phase against Asgore.
Capture from the game Undertale, showing the combat phase against Asgore. ©️ Karen for Alucare.fr

Si vous décidez d’attack Asgore for the first time, you are unfortunately obliged to touch it.

Remark : Une barre blanche traversera l’écran et le nombre de barres dépendra de l’arme que vous aurez équipée.

You must strike when the white bar is in the center to touch it!

Once you have inflicted sufficient damage, Asgore yields. Allez-vous l’épargner ou le tuer ?


Flowey

Everyone's favorite evil flower returns and claims human souls to take on Undertale.

Capture from the game Undertale, showing part of Flowey's speech.
Capture from Undertale, showing part of Flowey's speech. ©️ Karen for Alucare.fr

This boss fight is very different from the others. Vous ne disposez pas vraiment d’actions classiques ni d’une petite boîte pour vous déplacer.

Capture from the Undertale game, showing the combat phase against Flowey.
Capture from the game Undertale, showing the fight phase against Flowey. ©️ Karen for Alucare.fr

Les attaques de Flowey remplissent l’espace et vous devez try to dodge them as best you can.

Use your red heart to click on the "Fight" button!
Utilisez votre cœur rouge pour cliquer sur le bouton “Combat” ! ©️ Karen pour Alucare.fr

Lorsque le bouton “Combat” (Fight) appears, you must press it. His health bar will appear and he will briefly take damage.

Remark : Many of his attacks are remotely controlled by lasers to help you dodge them. But most of the time, you simply have to keep moving as much as possible.

Capture from the game Undertale, showing the screen above Flowey flashing with a heart and the word Danger.
Capture issue du jeu Undertale, montrant l’écran au dessus de Flowey qui se met à clignoter avec un cœur et le mot Danger. ©️ Karen pour Alucare.fr

Lorsque l’écran de Flowey clignote avec un avertissement et un cœur, cela signifie que l’âme est sur le point de prendre le contrôle. L’écran entier devient alors une combat zone.

Capture from the game Undertale, showing an Action button appearing as the turquoise heart took control.
Capture from the game Undertale, showing an Action button appearing as the turquoise heart took control. ©️ Karen for Alucare.fr

Comme d’habitude, esquivez les attaques. Mais restez alerte, car un bouton “Action” (Act) will appear and you don't want to miss it!

If you click on the "Action" button successfully, a message will appear explaining that you have requested help.
En cliquant sur le bouton “Action” avec succès, un message s’affichera expliquant que vous avez demandé de l’aide. ©️ Karen pour Alucare.fr

Appuyez dessus pour recevoir de l’aide and you'll receive items that will come in very handy during your battle with Flowey.

Grab the green plasters to regain HP before fighting Flowey again.
Grab the green plasters to regain HP before fighting Flowey again. ©️ Karen for Alucare.fr

Remark : Si vous mourez, Flowey vous ramènera dans le jeu pour vous tuer encore et encore. C’est en quelque sorte une bénédiction, car vous pouvez retenter votre chance face à lui !

After having confronted all human souls, from the care items start to appear during normal fight scenes.

Grab the green objects to heal yourself while avoiding the chaos as best you can.
Grab the green objects to heal yourself while avoiding the chaos as best you can. ©️ Karen for Alucare.fr

Once you have depleted his health bar, Flowey load an old backup where he's at full health and will shoot you with a super laser, over and over again.

Après vous avoir tué et s’être moqué de vous à plusieurs reprises, les âmes interviendront pour en finir avec lui.

Capture from the Undertale game, showing the human souls who will step in to help you face Flowey.
Capture from the game Undertale, showing the human souls who will intervene to help you face Flowey. ©️ Karen for Alucare.fr

You now have the possibilité de tuer ou d’épargner Flowey.

Flowey's fate is up to you after you've faced him on Undertale.
Le sort de Flowey vous revient après l’avoir affronté sur Undertale. ©️ Karen pour Alucare.fr

Laboratoire Originel (True Lab)

Cette zone n’est disponible que lors d’une Route Pacifiste and contains the real final boss over Undertale.

Asriel phase 1

Flowey turns out to be Asriel, et le combat contre le boss final commencera. Ce combat n’est pas trop difficile, car vos actions le rendent beaucoup plus facile.

Capture from the game Undertale, showing Asriel for the first time on the Pacifist Route.
Capture from Undertale, showing Asriel for the first time on the Pacifist Route. ©️ Karen for Alucare.fr

Alternate these actions and use them as you need them to survive:

  1. Choisissez “Espérer” (Hope) to reduce damage next turn.
  2. Choisissez “Rêver” (Dream) pour remplir votre inventaire d’objets de soin.
Screenshot from the Undertale game, showing possible actions against Asriel.
Capture from the game Undertale, showing possible actions against Asriel. ©️ Karen for Alucare.fr

Tip: Take care of yourself whenever you fall below 10 HP, as it can easily take away that many.

Asriel owns several attacks :

  1. Starfire (Star Blazing) : Une pluie d’étoiles s’abattra sur la zone de combat. Restez dans le coin inférieur. La dernière grande étoile explosera et enverra des étoiles plus petites, alors soyez prudent.
  2. Shock Breaker (Shocker Breaker) : Des points d’exclamation apparaîtront juste avant l’éclair, essayez de rester en mouvement pour les éviter.
  3. Saber of Chaos (Chaos Saber) : En fonction des déplacements d’Asriel, mettez-vous sur le côté pour éviter ses attaques. Puis pour le mouvement final, restez au milieu.
  4. Chaos Breaker (Chaos Buster) : Placez-vous là où les lasers ne sont pas pour éviter les tirs. Le mouvement final enverra un grand rayon, alors éloignez-vous de l’endroit où il est pointé pour l’éviter.
  5. Black hole (Black Hole) : Asriel remplira tout l’écran et commencera à aspirer les diamants. Restez aussi loin que possible du centre pour ne pas être aspiré.
Capture from the game Undertale, showing one of Asriel's attacks.
Capture issue du jeu Undertale, montrant une des attaques d’Asriel. ©️ Karen pour Alucare.fr

Asriel phase 2

Asriel dira alors qu’il n’a utilisé qu’une petite partie de son pouvoir and transforms into a winged beast.

Capture from the game Undertale, showing Asriel's new appearance with wings.
Capture issue du jeu Undertale, montrant la nouvelle apparence d’Asriel avec des ailes. ©️ Karen pour Alucare.fr

All you can do for a few rounds is to “Se débattre” et d’esquiver ses attaques.

Capture from the Undertale game, showing the only possible action against Winged Asriel.
Capture from Undertale, showing the only possible action against Winged Asriel. ©️ Karen for Alucare.fr

Remark : Si vous mourez, votre cœur refusera d’abandonner et se reconstituera.

As the battle progresses, your bouton “Action” se transformera en bouton “Sauver” and you can choose to save each of your friends.

Screenshot from Undertale, showing the list of friends you can save during your battle with Asriel.
Capture from Undertale, showing the list of friends you can save during your fight against Asriel. ©️ Karen for Alucare.fr

Chacun d’entre eux vous attaquera de la même manière que lors de leurs combats de boss respectifs et vous devrez choosing the right actions to remind them of your friendship:

  • Undyne: Small Tape, Recipe and Face.
  • Alphys : Encourage, Quiz and Call.
  • Papyrus : Casse-crâne and Recipe.
  • Sans : Glandouiller.
  • Toriel: Câliner and Clémence.
  • Asgore: Câliner and Clémence.

Choisissez “Sauver” une fois de plus lorsque vos amis sont tous sauvés et vous pourrez alors save Asriel himself.

After saving all your friends, you can now save Asriel on Undertale.
After saving all your friends, you can now save Asriel on Undertale. ©️ Karen for Alucare.fr

Continuez à “Sauver” Asriel et à esquiver ses attaques which become less and less intense.

The battle will end and you'll talk to Asriel.


Sans

If you follow the Genocide Road, vous n’affronterez ni Asgore ni Flowey, mais Sans.

Capture from the game Undertale, showing the start of boss's battle with Sans.
Capture from Undertale, showing the start of boss's fight against Sans. ©️ Karen for Alucare.fr

Remark : C’est un combat difficile qui vous attend et vous serez presque forcé de faire plusieurs essaies avant d’en venir à bout.

Sans will laugh at your many deaths. His attacks are fast and mercilessand he dodges all yours.

Capture from the game Undertale, showing a blue heart against Sans.
Capture from Undertale, showing a blue heart against Sans. ©️ Karen for Alucare.fr

As in the fight against Papyrus, your heart turns blue and you'll have to jump over bones, despite the gravity problem.

Use these platforms to stand up and dodge certain Sans attacks.
Use these platforms to stand up and dodge some of Sans' attacks. ©️ Karen for Alucare.fr

One of its attacks is to make skulls appear on either side. Use platforms to dodge rays qu’ils tirent.

WARNING : Whether Sans vous propose de vous épargner, assurez-vous de l’attaquer. Il vous tuera si vous l’épargnez.

When the combat zone turns into a square, be sure to jump every time you find yourself on one side to dodge attacks!
When the battle area turns into a square, be sure to jump every time you find yourself on one side to dodge attacks! ©️ Karen for Alucare.fr

Ensuite, un enchaînement d’attaques vous attend lorsque Sans will threaten you with its special attack :

  • Une longue attaque se produira, au cours de laquelle votre zone de combat s’étendra sur le côté et vous devrez dodging bones.
  • D’autres crânes apparaîtront et tireront agressivement, move in a circular motion to dodge them.

Next, Sans will launch its special attack, which consists of do nothing.

After manhandling you with a rather impressive sequence of attacks, Sans will show you his special attack, which consists of doing nothing.
Après vous avoir malmené avec un enchaînement d’attaques assez impressionnant, Sans vous montrera son attaque spéciale qui consiste à ne rien faire. ©️ Karen pour Alucare.fr

To overcome Sans, il suffit d’attendre qu’il s’endorme. It will take some time, but eventually it will happen.

Take advantage of the fact that Sans is asleep to move your combat zone above the "Combat" button.
Profitez du fait que Sans dorme pour déplacer votre zone de combat au-dessus du bouton “Combat”. ©️ Karen pour Alucare.fr

Dirigez votre zone de combat au-dessus du bouton de “Combat” puis click on two to kill it.

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Undertale

Released on : September 15, 2015

Developed by : Toby Fox

Edited by : Toby Fox

Available on : PC, Mac, Linux, PlayStation, Switch

Genres : RPG, Action