Missing No.
AchievementRebirthUnlock unknown
Achievement details
- Achievement number
- 105
- Description
- Unlocked a new item.
- Requirement
- Complete the Boss Rush as Lazarus
How do you unlock Missing No.?
In The Binding of Isaac, Missing No. is unlocked by earning the Boss Rush completion mark as Lazarus (Character).
Structured pathSource-backed requirements are mapped into trackable steps.
Unlocked a new item.
How to unlock: Have 4 or more Soul Hearts at one time
What unlocking Missing No. leads to
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13