Description "Alien SinglePlayer" by Death_KnightDefend a combine outpost from the invaders.TO INSTALL:Copy the map to:path/Valve/Steam/SteamApps/usernameXXX/half-life 2/hl2/mapsRun the game and start the map Alien by openi Alien SinglePlayer by Death Knight Defend a combine outpost from the invaders. TO INSTALL Copy the map to path Valve Steam SteamApps usernameXXX half life 2 hl2 maps Run the game and start the map Alien by opening the console and type
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