The unreal garry :D joined the server

[Saul]

If Garry played less than 1 hour it doesn't show. He probably started Garrysmod and went on these servers pretty fast.

I think it is awesome that he joined, it is sad that somebody got him to leave but maybe one day he will come back again, who knows.

Would still show up in his recent activity in games he's played.

It's possible that the owner of Gmod has the ability to show whether or not the time that he plays the game, as he most likely spends a lot of time in the game, also there is no other possible way of everyone on the server getting the achievement, if its fake or not.