I'm going to sit here and go through everything I see that is odd and update along the way for more review.

Tick 3400: Vaga pops out, super nice fast swing, dead stop, first bullet hits leg.
Tick 8100: Slow it down, watch what happens a few ticks before. Deez isn't on radar, preoccupied with TJ after his ulti, mouse hovers to wall closer to deez, soon as that smoke pops, he starts shooting before you can barley see shit.
Tick 9000: While I agree with brett, his mouse does indeed follow from edge to finish, after flashlight is turned off. Too much shitty coincidence.
Tick 11400: While in fight with deez he directly shoots TJ's fallen AK through the wall. Coincidence.
Tick 22000: Meh.... Not really a big deal.
Tick 26000: Preswing odd, could be sound + high traffic.
Tick 30000: The only thing that gets me here is the hesitation and wait with the human as he is trying to TP...
Tick 31000: Again with the jack shit and dumpster... Refer to 9k
Tick 58300: Meh...
Tick 76000: Too much going on to really say anything concrete.

With the addition of posting what else I saw, I'm not going to vote. Do I personally believe he is cheating, yes. Does the demo provide me enough evidence to make a decision, nope. Again, don't jump the gun. Discuss in house before posting shit on difficult things that really look like cheating, will avoid a "bad" ban at the time, and not key the player you are watching them hard, so they don't get even more tricky and difficult with their cheating (If they are).