Skeleton Boomerang achievements

Defeat Grim Bob

Hit a chest with a 4X combo

Complete a run with maximum Blood Pressure and without using shortcuts

Complete all of Tony's quests

Defeat an enemy with a trampoline

Find all the secret bonus areas

Got all gold trophies

Get 100% completion on Hard Mode

Get 110% completion

Complete Weeping Woods

Invite Skelly Chan into the hub

Defeat T-Bone