-0- Baby
AchievementRebirthUnlock unknown
Achievement details
- Achievement number
- 175
- Description
- Unlocked a new co-player baby.
- Requirement
- Defeat Mom's Heart or It Lives! on Hard mode as The Lost
How do you unlock -0- Baby?
In The Binding of Isaac, -0- Baby is unlocked by earning the Mom's Heart or It Lives! completion mark as The Lost (Character) on hard mode.
Structured pathSource-backed requirements are mapped into trackable steps.
Unlocked a new co-player baby.
See the full unlock path for -0- Baby — 8 stepsWhat unlocking -0- Baby leads to
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13