Ultra Hard
ChallengeAfterbirth+Locked
Challenge details
- Challenge number
- 34
- Description
- All enemies spawn as champions if possible. Boss fights will be double trouble if possible. No heart pickups drop.
How do you unlock Ultra Hard?
In The Binding of Isaac, Ultra Hard is unlocked by unlocking Ultra Hard (Achievement).
Structured pathSource-backed requirements are mapped into trackable steps.
All enemies spawn as champions if possible. Boss fights will be double trouble if possible. No heart pickups drop.
How to unlock: [before Repentance] Defeat ??? or The Lamb / [Repentance] Defeat Mega Satan and unlock The Negative
What unlocking Ultra Hard leads to
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13