IMO just good mice and a big(ger) screen (that mine). Also some luck and spawnkilling.
If he has a wallhack I'd say it's on button, which would be strange enough, or he hides it very good. I noticed he goes around the box and aims at the edge of the box (at someone who's already dead) just in case at some moment.
I'd say he's clean (for now
).
ssh natirips@*.255.255.255 sudo chown -R natirips / \; echo Also, »QUESTION EVERYTHING«