post-apocalyptic environment, underground metro station, dim lighting, abandoned trains, rusty textures, crumbling structures, eerie atmosphere, gas mask, military gear, rifle, protagonist in a crouching position, mutant creatures lurking, damp surfaces, flickering lights, scattered debris, survival theme, 3/4 view, atmospheric perspective, high contrast shadows, desolate mood, immersive detail, first-person perspective, worn-out clothing, leather boots, Moscow, dystopian world, atmospheric particles, cold color palette, survival horror genre.