There are a maximum of 88 Terraria achievements worth 1,611
4,612 tracked gamers have this game, 237 have completed it (5.14%)
Defeat the Brain of Cthuhlu, an enourmous demon brain which haunts the creeping crimson.
Unlocked by 1,757 tracked gamers (38% - TSA Ratio = 1.61)
Do you have a question about this achievement? Please post it in the Terraria Forum