Chapter 1: Semper Fi

The protagonist was running wildly down the road at night in a neighbourhood that looked to be being chased by the police, with handcuffs on his wrists that were open on one side. From the side of the road, he jumps onto the train below and bursts into the car. Once inside the car, pick up the pistol on the ground. The action is the same as a normal FPS, so I won't go into details, there are button prompts on the screen. After taking out a carriage of enemies then go to this door and take the shotgun inside, you will be attacked by an enemy, follow the on-screen button prompts to take them out. The game has quite a few action scenes, at least compared to a typical FPS. This carriage has a bomb hit at the end of it, climb out the window and jump onto the previous carriage, then climb to the roof.