The game seems to swallow inputs a lot. Like the jumping only works on specific frames. It's a shame because it looks like a good game. I like the graphics and animation, and there seems to be some depth in there with momentum and wall jumping when the jump occasionally triggers.
Unfortunately the jumping bug makes it practically unplayable. Let me know if you're able to fix it and I would love to give it another try. I'm playing the WebGL version if that helps.