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the Bastiombre is an optional castle in’Elden Ring, located on the plateau of’Altus.

Its boss, Elemer du Roncier, drops two rare weapons upon his death: the’Épée d’exécution des Tourbiers and the Pavois des Ronces.

This comprehensive guide to the Bastiombre gives you the walkthrough to explore the area, find all the items, and defeat the boss.

Where can I find the Bastiombre in Elden Ring?

the Bastiombre is located in the northeastern part of the plateau of’Altus. To get there, start at Point de Grâce Plateau d’ Road’Altus and heads northeast. The castle is perched high up; it's hard to miss once you're on the plateau.

The area is infested with scarlet rot: bring some medicine or Boluses Purple to keep the accumulation gauge from killing you while you're exploring.

This castle is entirely optional in Elden Ring. No main quest sends you there. But the weapons dropped by the boss make it a stop that guides consistently recommend for strength builds.

Bastiombre Guide and Walkthrough: All Collectibles

the Bastiombre is full of useful items. Here is the complete list of what you can find in the area:

Board Chant du Champion : Pick it up in the large central hall of the castle, on the first floor. Examine it, then go to the location shown in the painting to claim your reward.
Forge Stones (5) x5 : scattered throughout the halls and along the ramparts. These forge stones are used to upgrade your standard weapons.
Dark Forge Stone (5) : Also found on the ramparts, reserved for special weapons.
Perfume Bottle : a perfumer's item to be collected in the area.
Stone Keyblade : to be found by exploring the castle's rooms.
Perfumer's Manual (2) : to unlock new perfumer recipes.
Dancer's castanets : Item to pick up before leaving the area.
Épée d’exécution des Tourbiers : large sword dropped by the boss Elemer du Roncier, with a dedicated war ash.
Pavois des Ronces : second haul of’Elemer du Roncier, a shield to be retrieved after the battle.

Search every nook and cranny before facing the boss. The forge stones are especially valuable for maxing out your weapons' levels. Collect them all before the battle against Elemer.

To find other hidden areas like this one, check out the guide to the Caria Manor, hidden area, and boss.

The Painting "Song of the Champion": Where to Find It and What to Do With It

the table Chant du Champion is one of the most sought-after items in the Bastiombre. You'll find it in the castle's main hall, hanging on a wall on the first floor. Interact with the painting to examine it. Once examined, the painting depicts a specific location in Elden Ring : Go to this location to claim your reward.

How to Defeat Elemer of Roncier: Guide and Tips

Elemer du Roncier is the main boss of the Bastiombre in Elden Ring. He guards the castle's summit and poses a serious challenge. To see a list of all the major enemies in the game, check out How many bosss are there on a Elden Ring? are waiting for you outside this area.

Preparations Before the Fight

Before facing Elemer, make sure you're properly prepared:

Recommended Level : Aim for at least level 60–70 so you can tackle this boss with confidence.
Weapons : Use a greatsword or a two-handed weapon to deal damage quickly between attacks.
Talismans : Talismans that boost physical damage are useful here. Elemer has no major elemental resistance, but physical damage remains the most effective.
Scarlet Decay : You'll be passing through an infested area before boss. Pick up your forge stones and treats the infection before entering the arena.

Elemer du Roncier's Behavior and Attacks

Elemer du Roncier He fights primarily from a distance. He thrusts his greatsword forward, sweeps the area twice in a row, then pulls it back toward him. He can immediately follow up with another series of sweeps, giving his opponent no respite. Distance is his advantage: the farther you move away, the harder his attacks are to dodge.

Key attacks to be aware of:

Sword Throwing : He swings his large sword in an arc. Dodge toward him, not backward.
Sequential Scans : two or three quick sweeps that cover a wide area. Stay right next to its side so the blows go over you.
Blade Recall : He pulls the sword back toward him in a straight line. Step to the side to avoid the follow-through.

Strategy for Defeating Elemer of the Thicket

The key to the fight against Elemer, is to stay stuck to him all the time. Position yourself behind him or to his side as soon as the fight begins. Most of his attacks will then fly over your head. Place 1 to 2 strokes After each of his strikes, then return to your guard. A well-timed dodge makes all the difference—rather than a panicked roll.

Don't back down from him under any circumstances: keeping your distance is the surest way to lose this fight. Stay aggressive, stay right on top of him, and wait for openings after each series of attacks.

Rewards After the Battle

Once Elemer du Roncier After defeating the enemy, you'll receive two rare items and an achievement Steam is validated:

Épée d’exécution des Tourbiers : A large, powerful sword with a dedicated War Ash, ideal for Strength builds.
Pavois des Ronces : sturdy shield, second loot from’Elemer du Roncier.

Maleigh Tourbier, Lord of Bastiombre

Outside the main castle, you can face off against Maleigh Tourbier, the lord of the Bastiombre.

This is an NPC invader that appears in the area and poses an additional challenge. It wears gear specific to its character: defeat it to obtain its full set of gear. The video below shows the battle against it:

Explanatory video in French by Alucare, ideal complement to the page. View video (you can use YouTube's automatic translation)

To find all the game's nighttime enemies, check out the list of boss at night in Elden Ring.

Where to find Valkyrie's prosthesis in Elden Ring?

The Valkyrie prosthesis is not found in the Bastiombre, contrary to what is often claimed.

You can obtain this talisman at the Castle of the Shadow (Shaded Castle), an optional area located in the Giants' Peaks.

Complete Video Guide to Bastiombre

The video below shows you the entire route through the castle, the order to loot everything without missing a thing, and the battle against the boss. Elemer du Roncier :

Explanatory video in French by Alucare, ideal complement to the page. View video (you can use YouTube's automatic translation)

Learn More About Elden Ring

the Bastiombre is just one of the many hidden areas in’Elden Ring. If you want to keep exploring and collecting more rare items, here are some helpful guides:

Do you have any questions? Feel free to check out Discord or Twitch!