Uncharted 4: Chapter 21 Brother's Keeper - walkthrough Uncharted 4 Guide
This page of the Uncharted 4 guide has a walkthrough for chapter 21 – Brother's Keeper (going through the mountains and the cave).
Last update: 27 January 2022
This page of the Uncharted 4: A Thief's End has a walkthrough for chapter 21 - Brother's Keeper. You will learn, e.g. how to complete the climbing sequences in the mountains, and how to go through the caves to reach Sam.
Chapter 21 information
In this chapter, Nate will search for his brother on his own. There will be a lot of climbing in this chapter and no enemies. You have to obtain four treasures and a journal note here.
Cross the mountains
Right after you start, climb up. After a while, you will find Sam's traces. Use grappling hook to swing over the chasm. Instead of swinging to the other side, wait for the line to go back and jump over to the platform above the tracks. There, you will find the first treasure (Mughal Enamel Bird). Use the rope to jump to the other side, follow the tracks and climb over the ledges and you will fond Sam's traces. Use grappling hook and climb until you reach an abandoned hearth. Next to the hearth, there is a skeleton with a journal note on it. Jump over to the elevation opposite, follow the cave and jump over the wooden bridge.
Through the caves
Follow into the caves. Soon, a plank will collapse under your weight. Use the rope to swing over and grab on to the ledge. Shimmy to the left and then, lower yourself into the cave below. At the end, lower yourself and in the crate, you will find a treasure(Stone Vase). Use the piton to climb up higher and jump towards the wall on the right. Keep jumping over ledges, up until you reach a rope. Take a swing and jump towards the mast. In mid-air, use grappling hook. Jump towards the slanting platform, slide down over it and jump onto the stone surface.
Climb up and attach the line next to the chasm. Lower yourself and above the ship, you will spot a bright ledge, at the foot of the mountain. Take a swing carefully and jump onto it. You find the last treasure (Strange Fruit) there.
Jump onto the wall on the left and use piton grab onto it. Go right and soon you will reach a steep slope over which to slide down. Keep jumping over the holes and use grappling hook whenever you are falling down. Eventually, you will drop into water. Swim ahead a little and turn right. Come out of the water and in the cave, you will find the last treasure(Rajasthan Box). Return to the water and swim through the bottle neck. You will swim out into a pier and the chapter will end.