Congrats on submitting. I like that the music and art fits together pretty well. I also like that you included the optional theme in way. However, the player controller could use some work. The slime's base for slides way too much. It would be near perfect if this was an ice level or something of that nature, but I don't think that was the intent. So slowing down that base speed would be a good tweak. In addition or instead of tweaking the speed, adding a coyote jump would work well for your movement.