TF2 obvious aimbot, probable wallhack. Apart from the hacks, he's absolutely terrible, doesn't listen for SGs, etc.. One demo should suffice, the others were basically the same.
He was using the name "youknow19981" and his Steam ID is STEAM_0:0:73227956.
This took place at about 02:10 GMT, September 11th 2013, on "2Fort :: F-o-G.eu - Instant Respawn" (176.9.0.44:27045).