Really fun and lighthearted game (despite the setting xD). The rocker aesthetic worked really well and integrated nicely.
It's been mentioned below, but the jump is a little floaty. I found my self surprised with how far the character could jump when judging platforms, but I don't think that's a terrible thing. Maybe hell only has a few G's. The game started to feel pretty easy after a while, but that's probably good in the context of a jam where people will give up on games that are too challenging.
Great job!