Meconium
AchievementAfterbirth+Unlock unknown
Achievement details
- Achievement number
- 300
- Description
- Unlocked a new item.
- Requirement
- Defeat Ultra Greedier as ???
How do you unlock Meconium?
In The Binding of Isaac, Meconium is unlocked by earning the Ultra Greedier completion mark as ??? (Character) on hard mode.
Structured pathSource-backed requirements are mapped into trackable steps.
Unlocked a new item.
What unlocking Meconium leads to
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13