Player 1:WASD to move. X for attack. Player 2:IJKL to move. M for attack. Player 3:TFGH to move. R for attack. Player 4. Key arrows to move. P for attack. To make damage to the opponent you have to be touching it and then you have to press the corresponding attack button.
I also have a one Vs one game called Pokemon Battle Ultimate. It's exacly the same except it's one on one I hope you like it!!!!!