Khan and Artyom emerge from the River of Fate and head for the rails. Artyom must board and overtake the enemy train, where the Dark One is held captive. After successfully boarding and making his way forward, he released the child and the train crashes. They emerge from the wreckage, Artyom dragging the small Dark One to the surface where it can survive.
Artyom and Child now set out for Polis where he believes they can stop the coming war, and the final destruction of the human race.