Sorry, I couldn't seem to figure out how to shoot, or it wasn't working for me. I read the controls, left mouse button didn't seem to do anything. I tried right mouse button just in case but that didn't work either. I also made sure I was aimed over an enemy in case that was the problem, but it still wouldn't shoot. The little bit I was able to play before getting absolutely obliterated by the first enemy looked great though! lol