Not sure if there's anything more to the game than those couple of enemies and that one boss, it could use a lot more varied gameplay. The movement is rather awkward for a bullet hell, it's floaty while it should feel stiffer, though it's also pretty hard to see when something's hitting you, it's all kind of confusing (and the screen soon gets filled with bullets all of the same pattern that don't really seem dodgeable unless you just circle around the screen). The sound effects are pretty distracting and don't really match the gameplay, particularly the enemy shot sounds being... piano notes? or something like that. Also, I see what you wanted to do with the point item stuff getting pulled towards the player, but they should get pulled 100% all the way to the player once you get within range or hover over them, because as of now they stay there halfway if you pull out too much, and it's pretty unsatisfying (also they could use a graphic upgrade instead of just being spheres, but understandable if you couldn't do so due to time limits. Just adding a color and emission/light would make them look better though, I think)
I'm curious to know whether the 3D was made for the jam, because if so that's pretty impressive, I like the player and boss models, and the background is cool too. A bigger game with that aesthetic and that character design could be nice.