actually i had also noticed darkness hacking yesterday.....his ping was normal so if he was not lagging then he must b hacking! i had a duel with him in another server and i could kill him very easily, but i couldn't kill him yesterday, i think he had enabled headshot protection in which the player doesn't lose hp with m4 or any other similar wep, he can only be killed with stub or pyt....! and he appears to b lagging infact he is hacking!
P.S: i m 90% sure that he hax!