This is a great entry! very cool pixel art and solid art direction, simple and effective game mechanics, but the game could improve significantly with proper sound effects and music.
Music: It's too midi. I like the genre, but maybe an approach combining jazz and chiptune would match the art style better.
Sound Effects: Duuuude! your game looks amazing! it should definitely sound amazing as well! I think you missed a great opportunity , maybe due to the time constrains, but this game deserves sfx as good as the pixel art.
Great entry, Fun and beautiful game! Nice work!