This was very interesting, and fun to mess around with. The text says that you swap controls by holding Ctrl, but it swaped by tapping Ctrl. That took some time to get used to. The bullet collision with walls felt wonky, and it was hard to predict if shots would actually make it to the target. Also, I managed to fall off the map. Otherwise, I thought it was really cool. I think with a bit more time to iron out the technical issues this could be a really great game.