post-apocalyptic setting, Metro 2033, dark tunnels, abandoned subway stations, Moscow, male protagonist, gas mask, rugged clothing, makeshift weapons, dim flashlight, eerie shadows, mutant creatures, survival horror, atmospheric tension, rusted metal textures, dripping water, scattered debris, underground society, military factions, scarce resources, intense firefights, claustrophobic spaces, 3/4 view, ambient lighting, desaturated colors, high contrast, detailed environment textures.