Skip to content

26%

Strange Key

AchievementRepentanceUnlock unknown

Achievement details

Achievement number: 558
Description: ???
Requirement: Defeat Isaac, ???, Satan, and The Lamb as Tainted Eve

How do you unlock Strange Key?

In The Binding of Isaac, Strange Key is unlocked by earning every normal-mode completion mark as Tainted Eve.

Structured pathSource-backed requirements are mapped into trackable steps.

???

See the full unlock path for Strange Key — 6 steps

All of
- Tainted Eve → Isaac (normal)
  - Tainted Eve
- Tainted Eve → ??? (normal)
  - Tainted Eve
- Tainted Eve → Satan (normal)
  - Tainted Eve
- Tainted Eve → The Lamb (normal)
  1. Defeat Satan 5 times to unlock The Negative. source
  2. The Negative is a guaranteed drop from Mom; take it, then defeat Satan in Sheol and touch the chest to enter Dark Room. source
  3. Find and defeat The Lamb in Dark Room. source
  - Tainted Eve

Show full path Show missing

What unlocking Strange Key leads to

Source: bindingofisaacrebirth.wiki.gg

Imported 2026-09-13