Good implementation of the theme, capturing the essence of the Game Boy. This game has great potential, and you could add a lot of features in the future. As an improvement, I would slightly reduce the player's hitbox so the player can get closer to the enemies, and I would add power-ups like a rotating shield that surrounds the player, similar to the bats, which would block enemy projectiles, but without making them too abundant. A great game for this game jam, congratulations!