Love the chaos. Frantically dodging and weaving through the enemy bullets while trying to parse what's going on in the background put a big grin on my face.
I think I would have liked the game more if you could hold down click to fire. Manually clicking does bring about it's own gameplay nuance, in that investing the effort to click faster does provide a reward to the player, but overall I'd have prefered a static firerate that was automatic. Also, while the music was very good, I think it was a bit loud.
But overall, I liked this one a lot!