Cross the Walls
There is yet another Base Camp (Icy Bluff) before you go into the city proper. If you have the Bolt Action Rifle, you might want to switch to that. The SMG is amazing against many targets, but it won’t be as powerful in the city you’re about to explore. High damage per shot is king at the moment.
Someone left a zip line at the camp. That should make your entrance much easier. After using the zip lines, you end up on a few handholds as the city guards look down on your position. Hopefully it’s too dark for them to spot you!
A portcullis opens, deeper into the town, and a Deathless Knight comes out with an Archer in tow. The Knights have even better armor and a shield as well. Kill the Archer immediately, and then use either a Greek Fire urn or a Poison Arrow to kill the Knight before he advances on you.
Make sure to loot bodies while you advance. The Deathless have plenty of Arrows and Hides (and bullets as well). Go through the portcullis when you’ve gathered everything you can, and snipe the next two pairs of Archers along the street. You’re funneled into a courtyard, and that’s when the heavier enemies attack.
Two Archers take the top of the wall in front of you (though they won’t get into position until later in the fight). In front, a Guard and a Knight charge toward you. The urn on the left and some special Arrows would really help here. Hide behind the wall on the right, close your entrance point into the yard. This avoids Archer fire while you deal with the melee attackers.
If the enemies make it into close quarters with you, pull out a Shotgun! That’s a great option when you’re out of space and need damage fast. Kill off the remaining Deathless, search for loot, and take a breather.
Leave the town and search the next area for two Documents (Fire on the Horizon and Lights in the Dark). They’re both close to the gates and can be found with minimal effort. One is to the left, beside the walls. The other is on the right, out in the open. Past that Document is a Relic (Mysterious Figure) at the end of the ledge.
Use the ice wall to the north to climb to a ledge that overlooks the town. Walk toward your next objective, and put some distance between Lara and the Deathless. Grapple to reach the end of the map. Walk through a couple more rooms and talk to Sofia on the radio. You soon find yourself in The Lost City.