I think you probably need to have the controls explained. Also, I am not entirely too sure if this was runned on a actual GB rom, but the screen kind of looks like it's running on an emulator. I tried to press the Enter key, but it seemed to be mapped to the B button when I was looking at the screen device as well as the X key seemed to be shown as A button on the screen device, but the lasers only shoot at the Space Key. Also, the you might want to improve the Level 2 since the enemies ganged up on the player too easily.

i never figured out how to attack so i didn't get far whoops. interesting colour palette choice! gets a lil hard on the eyes after a while but i love when people make bold choices for their game's style. the interface is pretty cool.

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 !

The game boy interface was a nice idea!!