When nearing the end of the game in single player mode, you will have to catch the tram to proceed to the next area. The tram is located immediately after "The Shooting Gallery." In order to avoid fighting most of the guards, equip the Heavy Machine Gun. Next, proceed down the track towards the small door to the left. Inside, kill the guard. Once the other guards stop rushing in and shooting at you, collect the health vial (just behind the desk), dash out of the room, head towards the front right side corner of the train, and duck down immediately. This will prevent gun fire from hitting your character. Stay ducked down until the loading screen appears.
