Excellent idea. Expertly polished as well.
I loved the art style and how you can pass the levels in a couple of different ways.
Maybe one small suggestion: I think the game might benefit if you drew tiles across the level. Without them it's a bit hard to measure how many moves I need to make to my destination. I might count 3 steps, but it would actually take 4 because of a larger collision box on a small rock.