Climb up the yellow-rimmed crate in the corner and use the pipes on the walls as handholds to move over to the platform on the left. Walk across the narrow beam and drop down into the next room to meet up with Chase at the window. She will have to run, leaving Drake to escape the burning building by himself. Drake will find the machete in a cutscene. Approach the cloth dangling in the hall to slash it down with the machete. Then run to the back of this larger room and approach the crate in the top left corner to find a treasure.
After grabbing the treasure, return to the entrance of the room and climb up the yellow pipe. Keep climbing across the series of pipes to the left. Be careful, as they will break under you as you go. When you reach the platform, get onto the crates on the left and jump across to the other side. Use the dangling chunks of wood like monkey bars to reach the end of the path and swing to the opposite wall. Climb all of the way down the pipe and shimmy to the right. Search the sink for a treasure. Now get back onto the pipe and climb it halfway up to jump onto a charred platform.
Run across the bridge as it collapses on you. Jump at the wall as the wood gives way to latch onto a pipe, then climb right to reach the window. Jump out through the window to escape the burning building and meet back up with Chase. A cutscene will play in which Chase tells Drake that she refuses to leave the compound without her amulet. Reluctantly, Drake agrees. Now you must sneak through the compound and into Guerrero’s offices to find Chase’s amulet.
A guard will come running after the cutscene to investigate the fire. Sneak up behind him and knock him out as he shouts frantically into the building. Run down the little ramp and approach the collapsed wooden beam to initiate a minigame in which you must swipe the screen to lift the bar for Chase. Follow the path to find another enemy. You can take this guy out stealthily just like the last one. Sneak up behind him and knock him out. Look to the left to find a blue tarp. Cut through it with the machete and grab a treasure from the pile of cinder blocks in the corner. Now return to Chase to boost her up. She will push a crate down for you so that you may follow her.
Run straight, into the tiny room, to find a photo opportunity. Snap a picture of the pot while fully zoomed to ace this one. Now leave the room and follow Chase. You will find yourself behind two enemies. Sneak up behind them and take them one at a time. The second will drop a shotgun, which you should grab for later. Climb onto the rock and boost Chase up to initiate a cutscene and end the chapter.