I really liked this game, art is really nice especially paired with all the little animations. Sounds and music are fitting, though would like to have a sound for killing an enemy. I like that each enemy behaves completely differently, so you have to learn what they do to best react to the level. The game controls smooth, I'd consider moving pickup to maybe E, but that's just me. I did feel myself defaulting to specific ammos because it was hard to remember all of them, and a few seemed way better, ie. the triple ice shot, and the huge explosion. Maybe a little name above the ammo bar saying what the current one is. Also the HP sprite was sorta hard to discern how many hits I actually had left, but that didnt really matter because there wasnt anything to do about that. Other than that, some more variety in level layout would be cool, like different starting locations / obstacles etc. It was still really fun, got to level 52 for my best run, that all slime room caught me off guard cause I didnt use a powerful ammo first :C. Well done on your game, and I think it has alotta potential for even more stuff!