Player 1: WASD to move, Space bar to kick. Player 2: Arrows to move, M to kick. Click on player/stage/ball to select, click arrows next to it, to change it.(In selection Menu).
This took me 2 days, it was a bit difficult but I made it. Single player not working since I'm not really sure how to do the COMP system that it moves randomly and appropriately. Have ideas for it? Please comment and tell me! The more ideas, the sooner I release the Single player!