Let's continue with the solution of The Last of Us in the Quarantine Zone:
Part 1: 20 years later
You will find yourself 20 years after the facts shown in the prologue. After seeing the opening cutscene, follow Tess to the first checkpoint. Use the first aid kit when your partner gives it to you, then continue with her inside the building. Once you reach the apparently dead-end room, approach the TV cabinet and press triangle to move it and reveal a secret passage. Enter the tunnel and keep following Tess, who will lead you through.
Part 2: beyond the wall
Search the surroundings to collect some useful adventure items, then help Tess climb up the wall. When the woman has climbed, press X near the wall to grab hold of and help you climb up too. Continue along the obligatory path and climb again until you find yourself outside.
Once outside, go around the building and pick up the ladder behind the nearby car. Place it under the hole in the wall and climb up to enter the building. When you are inside, first of all examine the drawers and doors of the kitchen in which you will find yourself to collect some useful objects.
NB: inside the bedroom you will also find a PLATE OF LIGHTS.
Go down the stairs and follow Tess until you have to put on the gas mask because of the spores in the air. Continue crouching through the laundry room and move the obstacles to continue. When you meet the dying man you can decide whether to kill him or let him die of starvation; don't forget to collect the ammo at his feet though. Then continue along the offices, crouch to go through the locked door and get rid of the three infected you will meet, possibly in a discreet way. Before following Tess out of the building, collect all the useful items (energy bars and bullets) and, just before exiting, enter the door on the left to collect the collectible "Note from a Brother".
Now go up to the second floor. Jump off the destroyed slab, pick up the beam and pass it to Tess who will position it to allow you to go up and through the hole otherwise impossible to jump over. Then jump outside using the fire exit and keep following Tess. Arrived at the door stop: examine the tree near you to see a pendant, then shoot it with the gun to make it fall and collect it. Now you can enter.
Part 3: the slums
Collect the ammo on the table and witness Tess's actions, then continue into the quarantine area until you have to cross the bus from inside to continue. In the next area are two COLLECTABLE ITEMS: a wanted poster with the word WANTED and a note written in pen, on the ground near the table with the red and blue boxes.
Follow Tess into the corridor on the right, take care of the guard without being detected and continue. You will meet three enemies: Tess will kill the first one, you will have to deal with the other two as you like. Go ahead and help Tess climb over the wall; continue along the path and use the hole in the fence to get through.
You will now have to get rid of the two guards you will meet in the next area: by crouching near the window you can listen to the guards talking and knowing their position, so as to eliminate them silently without being discovered; Once out of the way one of the guards will drop a COLLECTABLE ITEM, while from the body of the other you can collect ammo.
Continue through the building to the sandbags. Crouch behind the latter, throw a bottle or brick to get the guard's attention and get rid of them in stealth mode. Go up the stairs and enter the warehouse, collect the items on the table and continue killing all the enemies you meet.
Continue to the garage door and go through it to meet up with Robert and his henchmen. In order not to be discovered, start by taking cover along the containers on the left, killing the first guard as soon as he turns his back. Then go back to where you started and use the freight elevator as a cover while taking out the other two henchmen who are nearby. For the last two enemies left there will be useful bricks and bottles, to be thrown to attract their attention and take them from behind.
Once you have killed all the enemies, go back to where you started to collect the two COLLECTABLE ITEMS of this area: near the bin near the water you will find the shipping letter, while near the blue bin in addition to the container behind the freight elevator there is is the note of the port. You can now continue through the door further ahead.
Once Tess has helped you open the door get ready to run: you will have to stay behind the fugitive Robert. When you reach him and throw a couple of punches at him you will see the cut-scene at the end of this chapter.
Part 4: the cargo
Collect all the items on the table and go up the ladder following your friend of the Lights. Once on the roof, continue to the one opposite and enter the window to collect other objects on another table that you will find inside the new room. Help open the blue door and keep going until you hear the enemies: now crouch down and take out one guard while Marlene takes care of the other.
Keep going to find more guards and try to sneak them out too. Now go to the bridge, where you will find Marlene in front of three corpses: talk to her, then go to the opposite side of the area and go down the stairs. Enter the room by opening the door and follow Marlene into the building where you will meet Ellie for the first time. In front of you you will also find a corpse from which you can recover a PLATE OF LIGHTS.
Now you can continue down the stairs to the street. The door is locked, so keep going underground, where you will find a narrow tunnel that will lead you outside. Continue along the fence until you find a door to enter.
In the next area, move the garbage bin so you can climb up and reach the fire escape. Go through the palace following the only possible path and continue until you see the interlude movie that will close this chapter.
