I like the art in general with the sprites and the background looking nice. The music is relaxing and juxtaposes the gameplay. I think the start is a little jarring and you could maybe give the player a little longer before the first spike. I liked the jump pads (?) but I think a little hint about them could benefit the game. Gameplay is smooth but I would maybe add a little bit more height in the jump as clearing spikes is sometimes a bit too tricky.