The Binding of Isaac: Rebirth
637 Achievements
800-800h
Steam
Black Hole
Unlocked a new item.
27.0%
How to unlock the Black Hole achievement in The Binding of Isaac: Rebirth - Definitive Guide
redjarman
TrueSteamAchievements
TrueSteamAchievements
Unlocked by destroying 20 Portals. They only start appearing after you beat The Lamb for the first time. They look like purple circular voids that repeatedly spawn more enemies into the room.
