Pretty good game! Certainly very impressive from a visual standpoint: the title screen, cinematics, feedback from shooting, all the characters, the HUD and so on and so forth just ooze charm and really create this wonderfully goofy world.
Gameplay was a bit of a mixed bag: on one hand, there were a lot of interesting enemies to fight and the escalation of difficulty definitely hooked me, and there were some cool techniques you could pull off like shooting down during a jump to hover. But on the other hand, it did feel like it was a toss-up on whether the fight was going to be fun or not for each room: some of the rooms actually allowed for a lot of fun verticality with platforms and such, and the enemies were arranged in an interesting formation, but most of the time the rooms were very boring, flat, and cramped rooms with enemies just bunched together in a messy mass: no strategy, just shoot and pray they go down. There was also some confusion with corpses: I actually thought the enemies were jumping at me some times, not realizing that they were already dead and it was just their corpse falling about randomly (maybe consider greying out corpses or having them always fly backwards from the shot).
All in all, its shortcomings to me were quite understandable given that it is a game jam game, and I still did have a lot of fun playing this stylish game!