As some of you may no, this game is having a big issue lately with cheaters. Some of them are using speed hacks while other are magically seeing the hidden through walls and having no trouble spotting them in dark corners. So I present to you this list of confirmed/suspected cheaters. Feel free to contribute.
Have no idea who this guy is. Basically, he types the command "setinfo name ""' in the console making him invisible on the player list. He spams annoying music with HLDJ and does it in such a way that no one can mute him unless they disable voice chat in the game menu. Also uses wall hacks and isn't afraid to show it. Avoid this guy! And if TK is on, make a pact with your team members and just gun him down at spawn. He'll eventually rage quit.
This clown tries so hard to look like an innocent player but sometimes gets carried away in the excitment of his all seeing eye. By that I mean he uses wall hacks. When I suspected that he was cheating, on the map hdn_decay, I positioned myself up on a ledge in the main room with the chandelier. It was behind a banner and a bunch of bushes hanging off the wall, in total darkness. As I suspected, he had no trouble spotting me behind a banner in a pitch black corner on roof level. When I asked him for an explanation, he credited the use of night vision goggles. Funny, because I'm pretty sure goggles don't make map props transparent.
3. "Super Hax0r" AKA "einstein.ehingen"
His name pretty much sums it up. Uses wall hacks, doesn't hide this fact very well. When accused, he claims that you suck at the game or pretend that The Hidden was in spawn, and that he checks the set spawn points every round. Again, funny because when I was hidden, he ignored the spawn points and casually made his way over to my position instead.
Will be adding more if I see any. Hope this helps!