Ultra Hard
AchievementAfterbirth+Unlock unknown
Achievement details
- Achievement number
- 280
- Description
- Unlocked a new challenge.
- Requirement
- [before Repentance] Defeat ??? or The Lamb / [Repentance] Defeat Mega Satan and unlock The Negative
How do you unlock Ultra Hard?
Source text onlyThe instruction is sourced, but its steps are not mapped yet.
Unlocked a new challenge.
Verified requirement
[before Repentance] Defeat ??? or The Lamb / [Repentance] Defeat Mega Satan and unlock The Negative
A structured unlock path has not been mapped for this achievement.
What unlocking Ultra Hard leads to
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13