I thought your game was fun to play, and that the idea of an AI controlled 2nd player was very cool and unique. I also liked all the little details like the particle effects, and screen shake. The simplistic art style is nice, but I will say that I think there is too much bloom. Additionally, the large variety of enemies always kept the gameplay fresh. One thing that would make it feel more complete is having a main menu, and a game over screen. But other than that, this is very well put together, nice job!