what hack is he using?

[fireztorm1]

in the end of the guy, it looks like a hack ,wich one is it?
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[michaelcle123]

I saw this vid from other site. He was using aimbot in that vid. He has smooth aim on, aimkey on so you won't twitch at all.
He posted his own vid on that site too. (Sorry, Can't tell what site is that)

[tryhardz]

thats hella awesome

[thinguyen]

gsagasgasgsagag