"Easy" and "Medium" are both pretty easy. If you're looking for a challenge, set the CPU to "hard." ;) CONTROLS Player 1 uses the arrow keys to move, jump and duck, and the "o" and "P" keys to attack. Player 2 uses the WASD keys to move, jump and duck, and the "q" and "E" keys to attack. NEW: CHARACTER There is a new character in this version, Tail-Z. Credit 2 08jackt. :( he left.