Okay! I have alot to say about this game! First off, the first bossfight was fun! I enjoyed the undertale bullet hell style.
I liked the humor, the beginning note and story sounded interesting.
For visuals, weakening the cores hurt my eyes a bit, and the game feels unfinished as alot of the assets don't seem to be fully done (white backgrounds, ect).
For audio, I enjoyed the music choice alot! But this game could've benefitted from SFX tremendously, and their absence is felt.
I unfortunately couldn't keep playing after the first phase of the boss, he wouldn't take any damage and I got softlocked. I think leaning into one core aspect (like the bullet hell boss-fights) would have helped this game, it seems unfinished with bugs and a lack of polish.
However, I still want to congratulate you for submitting this and making a fun bullet hell system! Given time to fix game-breaking bugs and flesh out visual/audio, this could be a fun game! Good job gamer. :D