post-apocalyptic setting, Moscow Metro, dark tunnels, dimly lit stations, gas mask, survival horror, atmospheric tension, mutant creatures, scarce ammunition, stealth gameplay, immersive story, Russian voice-over, gritty textures, rusted metal, crumbling infrastructure, eerie soundtrack, flashlight beam, shadowy figures, claustrophobic environment, first-person perspective, tattered clothing, improvised weapons, moral choices, human factions, radiated surface, desolate landscapes, abandoned buildings, snow-covered ruins, 3/4 composition, ambient occlusion, volumetric lighting, detailed character models, narrative-driven, environmental storytelling.