The game focuses on players taking on the role of a NATO officer tasked with rescuing hostages aboard an armored train and defeating a terrorist group who threatens to use nuclear weapons to devastate Europe.

The main focus is to explore an armoured train, visiting each car, searching for useful objects, while dealing with hostile enemies - with the game borrowing notable elements from both Resident Evil and Metal Gear Solid.

Combat focuses mainly on the use of firearms that the player can find during the course of a playthrough, with additional ammo either found in a level or dropped randomly by some enemies, with each weapon featuring parts that can be used to improve them.

The game's story is not completely linear, as the player can make choices at key moments that can determine what they experience later in their playthrough and which ending they achieve.

Jack, the only survivor in the NATO team, finds himself placed under the command of a United Nations counter-terrorist agency, who instruct him to rescue the ambassador and his family as well as dealing with the terrorists.

Following the fight, Jack discovers Mason is a double agent, sent to steal a data disk and the IC Chip from the Blue Harvest, and who was responsible for helping Boris capture the train.

After handing over the IC Chip to Morton in an attempt to rescue Christina once more, Jack finds himself contacted by Pierre, who takes him to the VIP lounge on the train.

Heading to the last car on the train, Jack confronts Morton, who reveals the disk contains the blueprints for creating a hydrogen engine - the same kind used by the Blue Harvest, which supplies it with almost limitless power - which he intends to use to make himself rich.