I really love the roguelike elements to this. The upgrade screen is probably where the style shines the most, and the only thing that could've improved the upgrades was simply more of them. But even the current variety is pretty good for a jam.
Over all, great style, great execution, and while the movement controls are a bit lacking, this game actually manages to be fun. I especially appreciated the enemy variety as well.
My only suggestion at the moment would be to smoothen out the movement controls (and maybe make the player a tad faster).