These are dark times for the world. A Nuclear Winter plagues the city of Moscow, rendering the surface unlivable. As such, humans have been forced underground, were theives, bandits, rapists and other scum are relentless. Along with that, there are mutated beasts dubbed "Watchmen", large mutated ratsthat roam the unused metro lines nearly unopposed. Spiderbugs, large black spiders that fear light, are among these grotesque creatures. A man named Artyom is guiding you through the tunnels...