(C) Valve and Sierra 1998 - 2007 This is the HL1 test chamber that you don't even need HL:S to run! Good for comics Version: 2.0 Changes: NEARLY PERFECT! lol i forgot my old password so it looks like this my first post but i have same name as my old account. THERE ARE NO REQUIRMENTS!!!!!!!!!!!
This download looks like a save. You need to place it in your saves folder inside the Garry's Mod folder.
You should end up with a directory structure similar to below: