Neat game! I really like how the upgrades from the shop can open up new areas in he level as you get a higher jump and the like. My one critique is that the level is a bit too long- I kind of wish that I could do the core gameplay loop of upgrading and improving over the loops more frequently, but it takes so long to get to the end that most of the time it kind of feels like I'm just playing a generic platformer. I think shortening the level (or maybe making the upgrades be doled out faster/cheaper) might have helped with the pacing a bit. Still, this is a really cool game, and I had a lot of fun with it, great work!