Blank Rune
AchievementAfterbirthUnlock unknown
Achievement details
- Achievement number
- 233
- Description
- Unlocked a new item.
- Requirement
- [before Afterbirth+] Complete Onan's Streak (challenge #29) / [Afterbirth+] Complete The Guardian (challenge #30)
How do you unlock Blank Rune?
Source text onlyThe instruction is sourced, but its steps are not mapped yet.
Unlocked a new item.
Verified requirement
[before Afterbirth+] Complete Onan's Streak (challenge #29) / [Afterbirth+] Complete The Guardian (challenge #30)
A structured unlock path has not been mapped for this achievement.
What unlocking Blank Rune leads to
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13