This is all 19 difficulties from easy to humanely impossible. The hardest difficulty in the game on release is anguish (a custom difficulty made by @padra4 that is now CANON) Error is based off the EToH difficulty, Abomination is a combination of all of them, Mangling just sounded cool :D and Huamnely impossible is like frame perfects and stuff. Also sorry I haven't been online I've been playing roblox with my gf (jk I don't have a gf D:)
Nahh but actually I am making a youtube channel, roblox game and BToH all at once so wish me luck :D