The Last Of Us Walkthrough Part 55 – Chapter 8: The University (Science Building: Floor 2 to 3)
Now that you are inside the Science Building there are a few things to be on the look out for. Still, start by heading toward the door and checking the cabinet and drawer to the left of it for Crafting Items. Continue over to the left and into the adjacent lab. Look to the left to find some Lockers to search for Parts. There is a Work Bench here but it is better to wait a little longer before using as the Level 4 Tools are very close by.
Head into the next room, using the door to the left of the Work Bench. Once inside look in the drawers and cabinet on the left to find some Supplements and other items. After that head out into the hallway. Just outside the door, look to the counter-top to the left and the cabinet below it. You can find some Parts in there. Now head through the double-doors at the end of the hall.
In this section of the Science Building go into the room on the left first. Loot the locker for what you can find then head back into the hallway and go to the door on the right at the end of the hall. Interact with it then use a Shiv on it. This leads into a Lecture Room. On the left-hand side, on the desk, you will find the Level 4 tools. On the right-hand side, opposite the tools you will find a Training Manual: Molotov Upgrade 2. Now make your way slowly back to find more goods like Crafting Items and Supplements. Now is a good time to head to the Work Bench and upgrade your weapons.
After you have upgraded your weaponry head back into the hallway and look for the yellow cord running out to the right through the door to 102. Follow it to the balcony and go over to the right. Interact with the clipboard by where Ellie is rummaging through a crate. They will hear some noise from above. Time to head on up to the third floor.
At the top of the stairs turn to the right and head for the balcony. Follow it over to the next door and head on through it. Go straight across the way and into the room there. In this lab head forward and look the shelving to the right. You will find some Supplements there for Joel. Now head into the lab on the left.
Turn to the left and go through the door there to the far end. In the far left lab, search the first drawer for some parts then head to the back corner to find some Supplements inside a drawer as well. Just continue on to the left and around to the back left room. Once in there get to the far side of it and look to the right. You will find an artifact: “Office Recorder”. Listen to it to learn something of happened here.
Now head over to the right and toward Ellie. Approach the plastic sheets there is a quick scene with a Light falling over. This disturbs both Joel and Ellie because the Infected do not hide. Head on through the little tunnel she found. After you cross through head over to the left and look on the far table. You will find an another artifact there: “Fungal X-Rays”. Now head on through the door on the right.
Joel and Ellie will encounter the monkeys again which seem to be the source of the noise you have been hearing. In this lab be sure to head over to the big table on the right. Another Recorder sits on it. This is an artifact you can collect: “Lab Recorder”. Listen to it then head back for the back-left corner of the room. Look on the shelf on the right to find a Firefly Pendant. Grab it then head on out of the room to the left. In this one, go to the left and check the cabinets for Parts then the opposite side on the right for Crafting Items. Now go to the door on the right and force it open as prompted. Inside runs a cutscene where Joel learns where the rest of the Fireflies have gone: Salt Lake City. Things take a turn for the worse as Survivors make their appearance shooting at Joel.