Player 1 Arrow keys to move around. Player 2 WASD keys to move around. Collect the item to grow your trail and try and kill the other player with your trail.
Programing class? Also don't press left key if your going right or else you'd die immediately because of overlapping your tron trail. Same goes for every other keys as well. Also don't press the arrow keys too fast or you also die due to the tron overlapping it's tron trail. Same goes for Player 2 with WASD keys.