This walkthrough will show players how to complete Chapter 21 in Uncharted 4, titled Brother’s Keeper. This chapter is relatively short, but involves a lot of grappling and climbing. We’ll help you traverse the caves to reach Avery’s ship.
After dropping down from the wall in the previous chapter of Uncharted 4, head up the path. Climb up the white ledges to reach the platform above. Curve around to the left and look for some muddy footprints on the ground. Grapple across the gap and crouch through the narrow cave. Follow the path to find more footprints. Hook to another grapple point, and swing to the white ledges ahead. Continue to grapple and climb across the mountainside. Pick up the note from the corpse beside the campfire that you encounter along the way.
Follow another set of footprints into the cave. Jump across the broken bridge. As you slide through the tunnel, prepare to grab the white ledges ahead. The next bridge will break as well. Slide down the path and be ready to grapple to the high post before the drop. Swing across and enter the narrow cave. Collect the Treasure near the wall beside the turtle, then head up the ledges to the left.
Brother’s Keeper continues as you make your way around the porous wall. Grapple to the post above. Swing across toward the waterfall. Gain some momentum, and swing toward the next post ahead. Grapple to the post and swing past the waterfall.
Slide down the rocks, grabbing onto the ledges just beyond the drop. Climb up and look for some debris on the left. Attach your rope to the debris, then rappel down. While hanging, you will see the ship down below. Swing over to the porous wall, and climb around the ledges to the right.
Round the corner and make your way across the rock ledges. Ahead is another lengthy slide down. Mind the gaps as you slide down the path. Prepare to grapple onto some debris above just before the drop off. Drop down into the water, and swim toward the rocky shore.
Grab the Treasure in the side alcove. Get back in the water and swim through the small hole. Dive down and swim through the narrow passage on the right. When you resurface, you’ll be just beneath the ship deck.
Listen in on the conversation. After the cinematic, swim out from beneath the docks. When you climb up onto the dock, the chapter concludes, and the next chapter begins. Now that you have completed Brother’s Keeper, you can head straight into Chapter 22 - A Thief’s End, or return to our Uncharted 4 Walkthrough.