This page of the guide has a walkthrough for chapter 13 of Uncharted 2: Among Thieves called Locomotion. The main element that distinguishes this level from the rest is that it takes on a moving train. Nate must make his way through the cars and fight the mercenaries. In the final part of the chapter, the hero will be attacked by another helicopter.
The goal of this chapter is to find Chloe. This part is extremely spectacular, but can also be rather difficult. Drake will face a lot of enemies.
You will also come across three treasures that are very easy to overlook due to the fast pace of this level.
Difficulty level: medium
Number of opponents: small
Chapter type: combat
You start the stage by grabbing the left side of the passenger car. Go to the top of the train and jump inside [secret 1].
Head towards the end of the car and then jump to the next. Grab the yellow pipe and move along it (you also have to move from one handle to another). The next car has goods covered with a blue tarpaulin. Don't stop - move to the next car.
You will come across the first enemy. You can eliminate him quietly - hang down on the edge of the car and wait until the enemy turns around. The next car has goods, too. Jump inside it and head towards the passenger carriage.
You will encounter several opponents. This triggers a scripted scene. One of the opponents will jump out of the window and attack you with his fists - defeat him. Use the same window to jump out.
Head up the train and climb the ladder to reach the roof [secret 2]. Jump towards the goods covered with a blue tarpaulin.
Time to shoot a few mercenaries. Use the chests as covers. The next passenger car has a lot of enemies. However, the biggest obstacle will be the mercenary using a stationary machine gun.
In order to get rid of him easily, jump out of the car and get on its roof. Then jump on the roof of the next car (ignore the opponents at the bottom) and approach that opponent from behind.
Use the machine gun to kill the remaining enemies. Jump on the coal car.
Stick to the left edge to avoid metal constructions. Don't stand straight if you want to get out of here alive. Go through the car with coal and jump on the next one [secret 3]. Go through it.
You will reach a tank. Go around it and jump on the other "fuel tanker".
Go through in the same way you did at the beginning of the chapter. The only difference are the signal lights. To avoid them, grab the handles above the yellow pipe.
The next car has three enemies. You have a great position - the roof has a good cover (shown in the left photo).
Enter the next car. This triggers a cut-scene after which you have to complete the most challenging part of this chapter - you have to survive. Drake is chased by a helicopter. The helicopter is equipped with two weapons - a heavy machine gun (hide behind covers to avoid damage) and a missile launcher (when it shoots, jump on the next train car). The missiles are telegraphed by a characteristic charging sound. After that, you have a few seconds to escape. Remember to hide behind the crates. You don't have too much time (it depends on the difficulty level).
When you reach the (locked) freight car, go around it by sticking to the left edge. This way you will avoid an attack from the helicopter as well as the traffic light.
When you reach the next cargo covered with a blue tarpaulin, be ready for the last and at the same time the most difficult part of this chapter. You will not only be attacked by a large number of opponents but also by the helicopter. You have to be quick and precise. Some of the enemies will have shotguns (they will try to get close to you).
After reaching the last car, eliminate the two opponents inside and pick up the grenade launcher lying at the entrance. Use it and hit the helicopter at least once. The helicopter will move away but only for a short time. You have to open the door at the end of the train car. Watch the cut-scene to complete the chapter.