Nice concept, good mechanics! The jump movement feels a little bit off though, it's like I start jumping to a direction and my movement accelerates? I'm not sure if that's happening, but that's what it feels like. I would understand acceleration when running, but not when jumping. It makes me feel less in control of my character. I made it to stage 2 and several levels in before the level turned impossible. I restarted, but didn't feel like doing it again. I think the game might be more enjoyable with pre-made levels than randomly generated, unless you can make the generation more likely to be fair. At the end I bought one of the 5-cost items, but didn't know what it does, so adding an explanation for those would be nice.