post-apocalyptic environment, abandoned metro station, dim lighting, eerie shadows, rusted train carriages, overgrown vegetation, scattered debris, gas mask, military-grade armor, assault rifle, protagonist crouching, stealth action, mutant creatures lurking, dripping water, flickering lights, survival horror theme, atmospheric tension, 3/4 view, detailed textures, realistic materials, immersive atmosphere, desolate beauty, muted color palette, underground setting, distant echoes, survival gear, first-person perspective, dilapidated structures, decaying civilization remnants, atmospheric perspective, soft ambient light.