Cool game, I agree with another commenter about how the Game Boy interface was nice. The gameplay itself was good too, I'd say add more audio, when the player gets hurt, or an enemy does, (or even draw a frame where the character is the lightest color you use, to indicate a hit animation). The Player sort of blends into the background, because they have the same color. Playing was a bit confusing at times; I kept getting teleported places. A Ui cooldown animation for the weapon would have been a good idea too. But, the music was spectacular, and the game graphics and gameplay really did fit the theme of gameboy. Nice work !