By the last 2 days i saw players using hacks. They fly in air and shoot through walls with akm or even a shotgun. And they make headshots from far away. The worst thing is that they can not be killed. So they just make chaos.
I hope anti-cheat will be up again and give these guys global ban present for X-mas
One of the proofs:
https://www.youtube.com/watch?v=YbJ402xYqGI at 7:05