Cool idea for a game! the modifier gimmick is definitely welcome, though at times I found it more annoying than anything. The only useful modifiers were either small body (because of wall jump, dunno if a bug or a feature) or high jump. The first few levels felt a lot more curated because of traps on the roof, punishing high jump, and learning the mechanics. I don't think there should have been 10 levels, unless you were introducing more mechanics in the later levels. The later levels felt a bit rushed and uninspired.
I definitely liked how the size of your character affected the music speed, and I definitely got a jumpscare when I died for the first time, hahaha.
when I got a good modifier, I tend to avoid the dice, but at one point in the earlier levels one of the coins was hidden behind a dice, so it was slight BS.
Anyway, congrats on submitting for the game jam!