S'alright.
It's a brillant idea for a platformer, but there are a couple problems I find with it. The levels aren't as varied as they could have been, so it gets repetitive quickly. Also, the movement is a bit too sluggish in comparison to the sprite's movement, which is one of the main things that makes some platformers annoying to me.
Even so, I'll commend you for the novel idea, and I'll give you a seven overall. Fairly good game, so thanks for that.