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Dull Razor

AchievementAfterbirth+Unlock unknown

Achievement details

Achievement number: 288
Description: Unlocked a new item.
Requirement: Defeat Delirium as Eve

How do you unlock Dull Razor?

In The Binding of Isaac, Dull Razor is unlocked by earning the Delirium completion mark as Eve (Character).

Structured pathSource-backed requirements are mapped into trackable steps.

Unlocked a new item.

Eve (Character) → 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
- Eve (Character)
  - Eve (Achievement)
    How to unlock: Don't pick up any hearts for 2 floors in a row

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What unlocking Dull Razor leads to

Source: bindingofisaacrebirth.wiki.gg

Imported 2026-09-13