Binding of Isaac Achievement: Bone Baby
In-Game Secret Number
Defeat Ultra Greed as The Forgotten
Defeat The Lamb in under 20 minutes
Defeat Hush as The Forgotten
Take 25 devil deals
Defeat Satan as The Forgotten
Pick up 5 familiars in a single run
Defeat an Angel 10 times
Earn all Hard Mode Completion Marks as The Forgotten
Unlocked the power of RERUN.
Complete 3 Victory Laps and start a 4th
Complete 2 Victory Laps and start a 3rd
Defeat Delirium as ???
Defeat The Lamb without taking hearts, coins, and bombs through an entire run
Use cards and runes 20 times
Defeat Ultra Greedier as Keeper
Defeat Delirium as Eden
Defeat 20 portals
Beat chapter 1 without taking damage
Defeat Mega Satan as Apollyon
Defeat Ultra Greedier as ???