post-apocalyptic survivor, stalker, gas mask, rugged clothing, carrying a backpack, armed with a rifle, exploring the Chernobyl Exclusion Zone, anomaly fields, radioactive, decaying structures, overgrown vegetation, foggy atmosphere, desolate urban landscape, dynamic lighting, first-person perspective, immersive environment, gritty texture, weathered materials, survival gear, ambient occlusion, high-resolution textures, atmospheric effects, 3D-rendered, detailed character model, environmental storytelling, interactive objects, realistic shadows, volumetric lighting.