You have a really smooth-feeling game, here. For the first bit of playing, the groovy feeling of the shooting sound almost sounded like an intentionally designed song; it's just such a good "thoop thoop thoop". The way enemies in the correct palette light up is really appealing, too.
Our core complaint comes from the amount of health the enemies had. It feels like they can take a lot of thoops before going down. We ended at a humble 680 points, although we're guilty of testing out the hitbox too much.