Marrow
AchievementAfterbirth+Unlock unknown
Achievement details
- Achievement number
- 392
- Description
- Unlocked a new item.
- Requirement
- Defeat Mom's Heart or It Lives! on Hard mode as The Forgotten
How do you unlock Marrow?
In The Binding of Isaac, Marrow is unlocked by earning the Mom's Heart or It Lives! completion mark as The Forgotten (Character) on hard mode.
Structured pathSource-backed requirements are mapped into trackable steps.
Unlocked a new item.
What unlocking Marrow leads to
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13