Cool game! I like the UI, it looks nice and its responsive. I managed to become immortal and have negative healh, maybe you didn't check if the players health is less than zero but just equal to zero? I'm not sure but other than that it was good time, and I liked the pixel art and backround aswell! One piece of feedback I would have is that the shooting doesn't feel very impactful, some screen shake and a deeper shoot sound effect would make the shoot feel even more poweverl. Still, I really like the shoot effect with the line and particles, very cool! And well done on the game, its very well made :)