I voted that he hacked for the following:
His Performance Was too inconsistent throughout. You could see him half the time not even noticing an enemy was there (2:15) and as soon as he ADS’d his weapon instantly locked on. This degree of accuracy and his lack of reaction times and overall awareness (not to mention his consistent camping in one section of the map, not exactly seen with decent players) I don’t feel is legitimate.
Most or all his kills were headshots. Pretty easy to notice a hacker by his consistent headshots and given like I stated above, I believe his aimbot is triggered upon looking down sights with his weapons, or some other form of trigger (1:07). However I could be wrong as with rhino’s minigun he was hitting players with headshots without aiming. at 1:44 you could see his slow reaction speed to the person appearing at the side entrance (and attempt to snap to head with aiming), and upon another enemy at 1:48 you could see his aim trying to hit upon the torso without ads, and then instantly snap and track their head perfectly upon aiming down sights.
His steam profile is concerning. Especially compared to how well he plays you would think he has played multiple other games right? well no, in the video you can see his profile was pretty much a relatively fresh account, which usually means their previous account was banned on something (VAC Banned) or that a new person to steam (most likely a new pc gamer) has begun playing on pc, but this doesent correlate effectively to his skill in game if he is a new player… Of course this isnt good enough evidence alone, but combined with previous points it’s a pro-point to the fact he is hacking.
Well thats my opinion anyway, any further improvements or reasons against my points will be happily taken 
