Half-Life: Urbicide is a 11 map singleplayer modification for Half-Life set during the Xen invasion of Earth sometime during the events of Half-Life. You play as Bruce, a warehouse supervisor, who, during the alien invasion together with a colleague, gets stuck inside one of the warehouse buildings. Bruce's fiancé, Rebecca, is not far from his location and decides to go and get her.
Poor HECU Marine. :'(