I like the concept! The pixel art is nice and the flame particles look good. It's really really hard to do much to dodge bullets, especially when the enemies are right on top of you and following you, so it sorta turns into an rng game of hoping they leave you alone. I'm not sure how you could simply fix it but the general concept of the game is pretty cool so you should go with it if you decide to add anything! I'm working on a bullet hell shooter game too, called Shmooblin Blaster. It's more of a boss rush game but if you wanna check it out and leave me some feedback I'd appreciate it!