This is quite a weird game. You're a guy who fights zombies without any weapons. You move with A-S-D-W and jump with Space. Your body and your hand follow your mouse cursor. If you swing the mouse from side to side when a zombie is close you punch the zombie. You can also kick zombies clicking, but it consumes stamina. If you're caught by zombies, you need to shake your mouse quickly to break out before you run out of stamina and die.