Really interesting game. It would be better, if you made colliders for the spikes smaller, so it is more forgiving. The movement feels little bit out, but when I knowed the mechanic it all joined together. I've never player game with this mechanic, so great job. Also I like hand-drawn visuals of this game. But what I would apretiate is smaller time between players death and new run. Because it only wastes time.
But other than that nice game.