I like the idea of having to choose the hard way to get to the cookie.
Unfortunately the movement feels a bit sluggish. and some coyote time would really be appreciated. And I had a huge problem with judging where I would land. The downwards shadow helps a bit, but I think you also need some kind of floor where you could see your shadows position in relation to where you want to land.
But all in all it's a neat little parkour game