Nice game concept.
I chose the first enemy. A ball as weapon and a ball as player means I don't know who is who.
I could just stand forever on the side of the shooting direction and rack points. Or get hit and rack minus points. As concept nice but as game nothing really to play yet.
Sound was there and special effects too. As tips for gamejams:
Keep things simple and get the game elements working first, including the theme, then focus on polishing the game if you got time left.
Nice entry though!