video game environment, Black Mesa Research Facility, Half-Life, abandoned laboratory, rusty pipes, flickering fluorescent lights, scattered papers, broken glass, hazard signs, alien residue, security guard outfit, HEV suit, crowbar, headcrab, Vortigaunt, Xen flora, emergency lights, red alarm, computer terminals, steel doors, ventilation shafts, concrete walls, 3/4 view, atmospheric lighting, detailed textures, high-resolution, dynamic shadows, wide-angle lens.