Long Baby
AchievementAfterbirthUnlock unknown
Achievement details
- Achievement number
- 213
- Description
- Unlocked a new co-player baby.
- Requirement
- Defeat Mega Satan as Lazarus
How do you unlock Long Baby?
In The Binding of Isaac, Long Baby is unlocked by earning the Mega Satan completion mark as Lazarus (Character).
Structured pathSource-backed requirements are mapped into trackable steps.
Unlocked a new co-player baby.
- ??? or The Lamb must be defeated once for the Golden Gate to spawn. source
- 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
- Reach the starting room of Chest or Dark Room, pass through the Golden Gate, and defeat Mega Satan. source
How to unlock: Have 4 or more Soul Hearts at one time
What unlocking Long Baby leads to
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13