Sinister Cave 100% Completion Checklist

Sinister Cave 100% Completion Checklist | Expedition 33

Complete location checklist for Sinister Cave in Clair Obscur: Expedition 33. Find all collectibles, bosses, and weapons found in this optional location.

Sinister Cave is a small optional location, accessible in Act 2. The area consists of a maze-like dark cave with glowing blue statues. The location may seem confusing, but exploring all dark paths is worth it, as it contains three new weapons - Elerim, Chalium and Corderon.

How to get to Sinister Cave: Use a portal in The Continent, on a red island on the very north-east of the overworld map, east from Sirene island.

This comprehensive Sinister Cave checklist compiles all items found in this location to help you achieve 100% completion. Use it alongside the Checklist page and Guides page to track your progress through Clair Obscur: Expedition 33.

Sinister Cave includes:

1 Expedition Flag
1 Boss
3 Weapons
1 Music Record

Expedition Flags in the area: Entrance Flag.

Total checklist progress

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Expedition Flags in Sinister Cave

One flag unlocks travel for this optional cave. Check it off when you claim the entrance.

Use all flags for the full map.

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Expedition Flags in the area

✓	Expedition Flag	Description
	Entrance FlagLocation:Sinister CaveFlag	Sinister Cave area

Bosses in Sinister Cave

The Chromatic Chalier is the main boss encounter for this checklist.

See all bosses for other Chromatic fights.

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Bosses

✓	Boss	Description
	Chromatic ChalierLocation:Sinister CaveChromatic Boss	Sinister Cave

Weapons in Sinister Cave

Three character weapons: Lune, Maelle, and Sciel. Row icons match each owner.

Collect every weapon on all weapons.

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Weapons

✓	Weapon	Description
	ElerimLocation:Sinister CaveLune Weapon	Under a statueOr sold by merchant in Flying Manor for 89650 Chroma
	ChaliumLocation:Sinister CaveMaelle Weapon	Defeat the final boss of the area
	CorderonLocation:Sinister CaveSciel Weapon	Go around the level to reach a dead merchant in the center

Music Records in Sinister Cave

One record is hidden high in the level; follow the hole description below.

Compare with all music records.

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Music Records

✓	Music Record	Description
	Nocturne pour LumiereLocation:Sinister CaveMusic Record	Find a hole in the ground at the top parts

Sinister Cave checklist FAQ

How many checkboxes are on the Sinister Cave checklist?

This page lists 6 checkboxes for Expedition Flags, Bosses, Weapons, and Music Records in Sinister Cave.

How do I reach Sinister Cave in Expedition 33?

Use a portal on The Continent on a red island on the north-east of the map, east from Sirene island.

What does Sinister Cave include?

Sinister Cave includes 1 Expedition Flag, 1 Boss, 3 Weapons, and 1 Music Record as listed in the tables above.

Does this Sinister Cave checklist save progress?

Yes. Checkboxes save to your browser. When you are signed in, progress can sync with your Game Checklists account alongside the Expedition 33 progress tracker.

Where can I find more Expedition 33 location checklists?

Use the Expedition 33 checklist hub and Guides page to track other zones and collectibles.

Sinister Cave in Clair Obscur: Expedition 33