Leystryku is using an exploit to give you achievements.

[≡(Light)≡]

Some fuck is using an exploit to give you the achievement "Yes, I am the real garry!".

http://steamcommunity.com/id/Leystryku/

Not on our server, on a TTT server I play, but still watchout for him.

[DL_Drill.NB]

"I can program in Lua, C/C++, ASM ( ATMega8, 8085, IA-32 ), Javascript, PHP, HTML and CSS. I also like to reverse stuff."
Basically like so yeh?