The subway has been overrun by an infected population who are lead by cyborg masterminds. You feed off the pain you inflict and have become known as Pain Train. This enables you to take on hordes of infected that would otherwise overrun a normal man. Shoot your way through 12 gore packed levels, complete side missions, unlock new weapons, beat multiple difficulty modes, and defeat all of the cyborg masterminds. Pain Train is entering a subway station near you, "All Aboard!"