Azazel
ReadyMake 3 deals with the Devil in one run.
Achievement
Defeat Mother as Lilith.
In-game: “Complete the Corpse with Lilith.”
Sources:AchievementsMotherCorpse
Make 3 deals with the Devil in one run.
Defeat Mom.
Reach Depths II and defeat Mom.
Sources:AchievementsWomb
Defeat Mom's Heart 10 times.
After: The Womb
Defeat Ultra Greed as Azazel.
After: Azazel
Defeat Hush 3 times.
After: The Womb, Blue Womb
Defeat Mother as Lilith.
After: Lilith, A Secret Exit