GB Bug
AchievementAfterbirthUnlock unknown
Achievement details
- Achievement number
- 201
- Description
- Unlocked a new item.
- Requirement
- Defeat Ultra Greed as Eden
How do you unlock GB Bug?
In The Binding of Isaac, GB Bug is unlocked by earning the Ultra Greed completion mark as Eden (Character).
Structured pathSource-backed requirements are mapped into trackable steps.
Unlocked a new item.
How to unlock: Complete Chapter 4
What unlocking GB Bug leads to
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13