Initially, the shaking crosshair got me focused on his aim - was he getting absurd headshots or things like that? But I quickly realized the user was just fucking around. Probably he got accused of hacking and decided to fuck with the people.

But then, I noticed that he seemed to trace some people a few times. I ended up rewatching the demo and trying to ignore his stupid crosshair antics, and I noticed it pretty clearly - he was trying to cover up wall hacks with his crazy crosshair.

I ended up voting this "Vision assistance"

So this person is using shitty cheats. To me, its clear he/she uses no recoil and walls. At 3:50 on that video, you can see the cheats were turned off, and the reflexes and aim are terrible. The shots are hitting, but because of the recoil, the player can't hit more than one shot. The reason I say that they are shitty cheats is how the screen was shaking. If you've seen no recoil cheats before, the persons screen shakes like that when they are shooting. But because the screen was shaking the whole time, that was the cheat trying to compensate ahead of time for any recoil which is just bad cheats. There were a few fishy headshots, but nothing that I would say was aim bot without reasonable doubt. I would just say wall hacks and no recoil.

I don't at all. The screen wasn't shaking the whole time. Any time he actually had to try he stopped shaking. I think even in the first round he stopped shaking to get that guy tunnels.

I think he is shaking his mouse around to fuck with people. Barely any shots land while he is doing it and you notice he has to completely stop to make any real shots. He is obviously using walls though. He couldn't have heard some of the people nor could his teammates have heard them. Definitely walls, anything else I would put insufficient.

I would say he is 100% using wall hacks. The best evidence I saw of this was around the 6:15 mark in the video. I can't say without a doubt that he is using any kind of aim assistance, but if he is that would explain the shaking at the beginning of the video. He also hit a lot of running shots as well.