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Berserk!

AchievementRepentanceUnlock unknown

Achievement details

Achievement number: 590
Description: ???
Requirement: Defeat Delirium as Tainted Samson

How do you unlock Berserk!?

In The Binding of Isaac, Berserk! is unlocked by earning the Delirium completion mark as Tainted Samson.

Structured pathSource-backed requirements are mapped into trackable steps.

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Tainted Samson → Delirium (normal)
1. Defeat Hush to unlock The Void. source
2. A Void portal can appear after a major boss; defeating Hush guarantees one. source
3. Defeat Delirium, the main boss of The Void. source
- Tainted Samson
  - The Savage
    How to unlock: Use Red Key (etc.) to open the hidden closet in Home as Samson

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What unlocking Berserk! leads to

Source: bindingofisaacrebirth.wiki.gg

Imported 2026-09-13