Wow! This is a really great game! The art is amazing, and the gameplay is snappy and satisfying (No floating crap). My only complaint is that, while in principle, being able to move back and forth and jump with the same button works well, the system inst quite polished enough to work well when you are switching back and forth between the actions. I would suggest that you either: Make jump and move, controlled with different buttons, Have systems in place so that you don't have to switch between jumping and moving quickly, only have either jumping or switching, or just polish the system a lot more. Also objects in the foreground occasionally go behind other object, seemingly at random.
Overall a great game that just needs a little work to become amazing!