Wow, this game has surprised me! At first I thought it was a simple top-down shooter, but it embraced the chaos-theme very well! The repeating music was also very chaotic - not sure if that was intentionally :D
Maybe you could add some hit indicator / sound / effect when you get hit - it was hard tracking my own health.
And maybe a game-over screen with your score / level / time you hold on? Now it restarted immediately.
Great submission!