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Black Baby

AchievementAfterbirthUnlock unknown

Achievement details

Achievement number: 212
Description: Unlocked a new co-player baby.
Requirement: Defeat Mega Satan as Azazel

How do you unlock Black Baby?

In The Binding of Isaac, Black Baby is unlocked by earning the Mega Satan completion mark as Azazel (Character).

Structured pathSource-backed requirements are mapped into trackable steps.

Unlocked a new co-player baby.

Azazel (Character) → Mega Satan (normal)
1. ??? or The Lamb must be defeated once for the Golden Gate to spawn. source
2. Open the Golden Gate by combining Key Piece 1 and Key Piece 2 into the Golden Key, or by using Dad's Key or another gate-opening effect. source
3. Reach the starting room of Chest or Dark Room, pass through the Golden Gate, and defeat Mega Satan. source
- Azazel (Character)
  - Azazel (Achievement)
    How to unlock: Make 3 Deals with the Devil in one run

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What unlocking Black Baby leads to

Dead God

Source: bindingofisaacrebirth.wiki.gg

Imported 2026-09-13