Shantytown
Find a Way Down to the Beach
After a quick conversation with Alex, hop on the zipline to return to the area where we lost Grim. There are two paths to take, one will return you to town and the other will lead you to the gondolas. If you followed the guide and have everything in Shantytown, take the west zipline and climb to the gondola and jump inside one as it passes.
Gondola Transport
Listen to the conversations as you head down to the beach and fill Sam in on the plan, gaining 100 XP for doing almost nothing.
Travel to the Survivors' Camp
When the gondola stops, rope dart a zipline to the nearby tower and take it down. Head around the tower and climb the yellow ladder to reach the next floor and then zipline right into a fire fight. The enemies will come zipping in from the left and right as you fight, so shoot them down in air for ease and finish off any in the middle until the cutscene. When it ends, climb the revealed yellow planks around the other side of the ship and then run and leap to the yellow bars across a gap. After another short scene, Lara will need to drop from zipline to zipline while shooting any barricades in the way. Eventually, you will fall in the river and be safe again.
Shipwrecked Beach
As you enter the beach, turn left to spot the GPS Cache 1 and then head east for some Salvage before heading down the hill a bit and heading right for more Salvage up another cliff by the river. To the north you should see a rock pillar in the water and a float nearby. Using the float, push or rope dart it to the north side of the pillar, where the craggy wall is, and use it to get up and dismantle the Cairn to start the Challenge: Cairn Raider.
Head to the main sandy path and follow it a bit until you see a small rock ledge on the lead and follow it, leading to a Food Cache and another Cairn. Turn around and spot the Mine down by the wall and shoot it to start the Challenge: Mine Sweeper and then collect the GPS Cache 2 where it was. Turn around and grab the Salvage and head back to the main path.
Head northwest on the path to a old truck and enter the area behind it, hoping on the small rock formation to grab another Cairn. Head toward the water for some Salvage and follow the path south to spot some more Salvage hanging in netting. Now head up the structure and enter the building near the blue canopy, right next to the Survivors' Base Camp, to find the Endurance Officers - Reyes: About Lara.
Now drop down to the beach and grab the GPS Cache 3 by the anchor and destroy another Mine out in the water. Follow the water line to the left and find another Mine and then enter the structure behind you to grab some Salvage. Back outside, and under the pier, grab the GPS Cache 4. Now return to the base camp and scramble up the building that had the document for the GPS Cache 5 before breaking into the north building to grab the Endurance Crew - Jonah: Recognizing the Truth.
Now approach the crew for a cutscene and make sure to talk to everyone until you can't anymore.
