hater's adventure demo

P1 ctrls: WASD to move, go into training 4 gun, mouse to aim and shoot, P1 can die. P2 ctrls: ijkl to move, right click to shoot, P2 cant die, go into co-op 3P or co-op 2P. 3P ctrls: the arrow keys, middle click to shoot, P3 cant die, only exists in co-op 3P.