Player controller feelt a bit weird to me; think it could help to separate aim and movement completely and not move relatively to the direction that you are facing since game has a more top-down feel to it. Shooting effect with physics impact on enemies and power ups are very satisfying. Also might have encountered a minor bug: it gets super hard after restart; I'm not sure if state of enemy waves is reset because it was back to normal once I refreshed my browser and started a new game. Gratz on the submission!