Soul of the Forgotten

RuneRepentanceLocked

How do you unlock Soul of the Forgotten?

In The Binding of Isaac, Soul of the Forgotten is unlocked by earning every normal-mode completion mark as Tainted Forgotten.

Structured pathSource-backed requirements are mapped into trackable steps.

Spawns The Forgotten as a temporary secondary character, controlled at the same time as Isaac. He dies with no consequences if his health run out, and disappears when Isaac leaves the room. The bone swing deals high damage, and reflects tears.

See the full unlock path for Soul of the Forgotten — 5 steps

Soul of the Forgotten (Achievement)
- All of
  - Tainted Forgotten → Hush (normal)
    1. Defeat Mom's Heart for the 10th time to unlock Blue Womb. source
    2. Defeat Mom's Heart or It Lives! within 30 minutes and enter the door to Blue Womb. source
    3. Defeat Hush in Blue Womb. source
  - Tainted Forgotten → Boss Rush (normal)

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What unlocking Soul of the Forgotten leads to

Nothing depends on this yet.

Source: bindingofisaacrebirth.wiki.gg

Imported 2026-09-13