Not a bad game, but definitely needs polishing. I thought the art was cool and the level design was nice, but it was a little too floaty for my liking.
In terms of polishing, there were some weird hitbox things, making me take damage after I killed an enemy and was running away, you could kinda fly up slopes if you were mid-jump, it didn't tell you what was health, or what the items were and I think some SFX and/or text could helped out a lot.
I saw on another post that you had little time, so all things considered good job!