Glass Baby
AchievementRebirthUnlock unknown
Achievement details
- Achievement number
- 171
- Description
- Unlocked a new co-player baby.
- Requirement
- Defeat Mom's Heart or It Lives! on Hard mode as Cain
How do you unlock Glass Baby?
In The Binding of Isaac, Glass Baby is unlocked by earning the Mom's Heart or It Lives! completion mark as Cain (Character) on hard mode.
Structured pathSource-backed requirements are mapped into trackable steps.
Unlocked a new co-player baby.
How to unlock: Hold 55 Coins at one time
What unlocking Glass Baby leads to
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13