Okay, admittedly, the game screen was bigger than my computer screen, so I couldn't see the edges, and I was actually really confused for a while. It'd be nice if the physics were tighter (I fell through the floor a few times) and that the obstacles were a bit more animated, but obviously this is a game jam submission, so things had to be cut somewhere. Also, I felt that the hitboxes on the water obstacles were often bigger than the sprite, which was annoying. But your idea of using platformer collectibles for randomly selected powerups in order to traverse the environment based on what you get is a very interesting game idea!