Ship 1 (blue): "A" and "D" to move, "W" to shoot. Ship 2 (red): Left and right arrows to move, up arrow to shoot. I'm really sorry, most times Ship 2 can't shoot, probably because of too many clones.
Thank you lm11887, I remixed it from you and added a tiny bit of code, but you made almost all of it. See below for the original project.