You're really good at working with UI and I love the way you combine 2D and 3D aesthetics so nicely! The bullets especially looked really nice imo, even if they were just coloured orbs lol
I did have the same bug KelTi6 mentioned, but it worked perfectly after that.
I will say something you might want to consider is reducing the size of the player hitbox. In some (but certainly not all) bullet hells this is done to give the player more of a fighting chance against literal mountains of bullets, and I think it would work well here too. The SFX also don't feel like they fit the rest of the environment you set up, so reworking those might be something you consider.
Great job overall dude! Keep at it!