Got Half-Life Deathmatch: Source for free for some reason? This mod gives you the single player part of the game for completely free! You can access the training course through the main menu and the actual campaign by typing "map c0a0" in the console. if you don't have console enabled just go the keyboard options, advanced and enable it. All credits go the Valve Software for creating the game. Well a little credit go to me for making it playable. All of the content is completely legal and I used nothing but the files in Half-Life Deathmatch: Source folder.