His strafing seems all over the place in every round – at times, he moves like a robot, and in other moments, he appears all over the place. If he's relying on an autostrafer, it's not doing him any favors because half of the players on the server can bunnyhop smoother without resorting to cheats. Although I can't make a firm judgment about whether he's cheating based solely on this demo, I would say there's a 60% chance he's using something to assist his strafes.