The Womb
Next upDefeat Mom.
Reach Depths II and defeat Mom.
Sources:AchievementsWomb
Achievement
Defeat The Lamb.
Sources:AchievementsDark RoomThe Lamb
Defeat Mom.
Reach Depths II and defeat Mom.
Sources:AchievementsWomb
Defeat Satan 5 times.
After: The Womb
Defeat The Lamb.
After: The Womb, The Negative