The Guardian
Unlocked Challenge #30.
Common57.1%last reported global rate
Steam
The Binding of Isaac: Rebirth Achievements
Official Steam achievement definitions and latest reported global unlock rates, ordered from rarest to most common.
Total achievements641
Rarest rate2.60%
Ultra rare0
Last checkedSep 20, 2026
Delayed official data
Rates and award counts were last observed on Sep 20, 2026.
XXXXXXXXL
Unlocked Challenge #21.
Common57.1%last reported global rate
Little Baggy
No public description is available.
Common57.8%last reported global rate
The Book of Revelations
No public description is available.
Common59.1%last reported global rate
The Cellar
No public description is available.
Common59.8%last reported global rate
Cain
Unlocked a new character.
Common59.9%last reported global rate
Cursed!
No public description is available.
Common60.1%last reported global rate
Magdalene
Unlocked a new character.
Common60.1%last reported global rate
Store Upgrade lv.1
No public description is available.
Common60.1%last reported global rate
The Tank
No public description is available.
Common60.1%last reported global rate
Azazel
Unlocked a new character.
Common60.8%last reported global rate
Blue Map
No public description is available.
Common65.4%last reported global rate
Purist
No public description is available.
Common65.7%last reported global rate
A Cube of Meat
No public description is available.
Common65.8%last reported global rate
The Harbingers
The horsemen are loose.
Common65.8%last reported global rate
The Womb
Chapter 4 - The Womb unlocked.
Common65.8%last reported global rate
Lazarus
Unlocked a new character.
Common70.2%last reported global rate
Butter Bean
No public description is available.
Common71.7%last reported global rate
Lucky Rock
No public description is available.
Common72.8%last reported global rate
Lil' Chubby
No public description is available.
Common73.1%last reported global rate