Only One Way Out - Uncharted 2: Among Thieves
Nathan and Chloe have just discovered the location of the treasure they're after, but they got company.
There are no treasure pickups for this level.
This chapter essentially requires you to backtrack out of the tomb, while dealing with several soldiers along the way. When you ascend the hidden room, your enemies will not yet be aware of your presence. You'll want to take out the sniper at the top of the stairs first - he's especially dangerous. After downing him, the others can be felled swiftly.
Collect the sniper rifle to kill a few more troops down the long hall, then swap the weapon for something more corridor-handy such as a shotgun. Make your way down the stairs, defeat more soldiers, chug a grenade down and continue.
Chapter 10 Shootout Video
You'll face several more firefights as you travel back outside, but most of them are self-explanatory and require little thinking. Always stay behind cover and when assaulted from up close, use the combination of Square and Triangle to beat the shit out of your assailant.
When you reach the courtyard, several snipers are stationed in the buildings, which can easily be identified from their characteristic red laser sights. Take these soldiers out first, then down the other troops and head over to Elena and her camera man Jeff.