Magdalene
ReadyHave 7 or more red heart containers at the same time.
Achievement
Defeat Mother as Magdalene.
In-game: “Complete the Corpse with Magdalene.”
Sources:AchievementsMotherCorpse
Have 7 or more red heart containers at the same time.
Defeat Mom.
Reach Depths II and defeat Mom.
Sources:AchievementsWomb
Defeat Mom's Heart 10 times.
After: The Womb
Defeat Hush 3 times.
After: The Womb, Blue Womb
Defeat Mother as Magdalene.
After: Magdalene, A Secret Exit