video game, Half-Life: Source, Gordon Freeman, HEV suit, crowbar, first-person perspective, realistic textures, physics-based gameplay, headcrab, alien creatures, Black Mesa Research Facility, complex machinery, industrial setting, dim lighting, emergency lights, flickering, steam pipes, concrete structures, metal walkways, computer terminals, hazard signs, security doors, ventilation shafts, scientific equipment, action pose, dynamic shadows, atmospheric effects, particle effects, high-resolution textures, 3D rendering, immersive environment, interactive objects, detailed protagonist, iconic logo, Valve Corporation.