Great danmaku game!
I haven't beaten it yet but gosh darn I WILL I swear I'm so close
I thought the choice to make the base projectiles split was interesting, really messes with your intuition to fly directly in front of the enemies lol.
I think you did great on the graphics too, not only does it look appealing despite the simplicity, but it's very easy to read which is super important in a game like this, the explosions and whatnot melt into the background and it's always very clear what's an enemy.
I uh, I think I broke it at some point, after I lost once I hit q to try and restart, there was a flash of "pause" and then I got stuck frozen on the main menu unable to start again. Hardly a gameplay breaking bug though!