Its Fun. I suck at it tho.
Surprising variety of Weapons, I was expecting it to just have 4, since you have 4 Slots. When finishing a level, it should just automatically put you in the level up screen, and ocne you've picked one continue. No reason to require the extra Inputs there. The small Rocks blocking projectiles and especially movement is super Annoying, is there a Reason for those? Why not just remove them and have only the default Terrain. Or at least push them more to the Sides/Walls, so you can have some free space to run around in.
Theres no Feedback on when you're getting hit, your Health just depletes, and with it being so far right, with so much action in the middle, its hard for me to realize that.
Also the minimap seems kind of Pointless. Sure, it shows you where the Enemies are, but it would be nice if it would show you the Terrain, I ended up running into a corner a few Times by accident/bad map generation and dying there because I had nowhere to go.