Stewart: A and D to move left and right Hand: Goes wherever your mouse pointer is. Left click and the Hand will go horizontally, depending on what side another Stewart is on. Space to punch downwards.
Pause is still in progress, so don't try to use it. Yes, I admit that by having the hand stay still in front of the other Stewart can automatically kill him, but don't do that. It makes the game boring - I will fix that!