Eve
ReadyDon't pick up any hearts for 2 floors in a row.
Achievement
Complete Darkness Falls (challenge #4).
In-game: “Unlocked a new item.”
Don't pick up any hearts for 2 floors in a row.
Defeat Mom.
Reach Depths II and defeat Mom.
Sources:AchievementsWomb
Defeat Mom's Heart 11 times.
After: The Womb
Defeat Isaac 5 times.
After: The Womb
Defeat ??? as Eve.
After: Eve, The Womb, The Polaroid
Defeat Mom's Heart 11 times and defeat ??? as Eve.
After: It Lives!, Sacrificial Dagger
Complete Darkness Falls (challenge #4).
After: Darkness Falls