Jump and movement felt a bit floaty. That could be a good or a bad thing depending on what you’re shooting for. Wall jump especially was kinda tricky. There’s a lot of very niche, precise mechanics that good platformers will have such as buffering inputs and stuff, it’s actually hard to get it right for a short game jam. The upgrade system seems like a great concept, if I were to change this game at all I’d have the first upgrade take place earlier, since otherwise it’s just a completely normal platformer, and the only thing that makes your game different takes place in the second level. And since the first level is actually a little difficult, some people might not even get to your second level to see what makes your game unique!