Really cool idea and fun levels, my little guy do be faasssttt haha. Can be hard to figure out what you can jump on and what not. Maybe you could highlight the top of the surfaces you can jump on top of with something or even just adding more arrows (especially in the first level when I didn't know I could jump through many items but stand on top of them) and after that the player can figure it out more freely? Idk I do also think it adds an interesting sort of puzzle element to this platformer which I did enjoy but idk if that was what you were going for :)