the Dualliste is the first large boss of the’Act II in Clair Obscur: Expedition 33, in the Forgotten Lands. The battle takes place in two phases. The key is Phase II and its Inversion status, which turns your healing into damage.
Tips for beating the Dualliste?
Here are some tips to make your battle against the Dualliste and limit the damage taken:
- The boss is weak against the Light and fire-resistant. Verso is therefore an excellent DPS for this fight.
- To break the boss faster, chain together the Fracture skills from Lune and of Verso.
- The Guide to Sciel shows you how she balances team buffs with massive physical damage depending on the phase.
- For treatment, Lune is a very good healer with the right skills. Sciel can also fulfill this role in a supporting capacity.
- Work on your dodges and counters. The Duellist's timing is tight, especially when he plants his sword in the ground before a double strike.
If you want to know how to play a particular character, check out our dedicated guides:
Where is the Dualliste?
the Dualliste is a boss from Act II in Clair Obscur: Expedition 33. You'll find it in the north, in the Forgotten Lands, on the large bridge that leads to the rest of the open world.
To reach it, you have to swim with Esquie all the way to this area. The path is littered with the bodies of members of previous expeditions. It’s just before reaching Monoco and the fight begins.
- Head to the north of the Forgotten Lands, accessible by swimming with Esquie.
- The Dualliste is waiting for you on the bridge, before the station at Monoco.

Defeating this boss unlocks a new open world for you. You can then head to the train station at Monoco and continue your expedition.
What are the Dualliste's combat mechanics?
The battle against the Dualliste splits into two phases. He is a formidable swordsman. He is weak at the Light and is fire-resistant, so focus on light-based attacks to maximize your damage.
Explanatory video in French by Alucare, ideal complement to the page. View video (you can use YouTube's automatic translation)
Here are the attacks you need to be aware of for the Phase I :
- The Duallist is launching a 5-shot combo on a single character.
- He attacks the entire team by thrusting his sword into the ground once.

- He can strike a character with 3 successive strokes.
- It has a 4-part single-target attack. You should dodge the second part by jumping.

Here are the attacks to watch out for during the Phase II :
- He follows up with a combo of 9 shots on a character. The last one is a Gradient move.

- He strikes the entire team with two blows by thrusting his sword into the ground.
- The boss poses Inversion on the entire team. As long as this status is active, your healing spells will no longer work. They will even deal damage instead. Avoid using any healing spells during this time.
- He attacks a character with 6 hits. The second and third hits can be dodged by jumping.
- The Duallist summons a duplicate that attacks three times. The Duallist then follows up with a fourth attack right away.

Phase II is clearly the most challenging. The timing for long combos is hard to get right. Learn these sequences step by step so you can land your counters and dodges at the right moment.
What are the rewards of beating the Dualliste?
Once you complete this boss, you'll receive three rewards that will come in handy later on. The main one is the Dualisto, a sword intended for Verso. It goes well with the icon Combo attack I, which he also earned after that fight.
You'll also leave with 3 Polished chroma catalysts. These items are used to upgrade your weapons right at camp. They'll help strengthen your team before your next battles in the Forgotten Lands.

To learn more about the game and the other boss enemies to defeat, check out our other guides:






