For the boss battle part, it's multiplayer. You use the "j" and "l" keys to move the enemy tank, and the "k" key to fire the cannon. Use the "u" key to rotate the cannon left, and the "o" key to rotate the cannon right.
Hi Scott, I'm sorry I didn't announce such a change sooner. I was originally going to have the boss move around and fire a cannon randomly. I started to code that before I came to a point where I didn't know what to do and had to change my game so I could keep coding it. Sorry for the inconvenience, Sally
