Some levels have the character facing the wrong direction at start. While the mechanics/gameplay were well done, the controls were fairly difficult to operate. Wonderful artwork and level design. I also love that there are buttons to collect.
Recommendations: The player acceleration can make it hard to control the character. I would recommend removing it or increasing the acceleration to max speed quicker (which might require a lower max speed). While I know this was intended to put several controls on a single button, changing directions and jumping was fairly difficult. I would almost get rid of the ability to manually change directions and instead make walls redirect the character. This would require a lot of redesign of levels, but I think it would make the game feel better.