Image: Naughty Dog / PlayStationOfficial screenshot from Naughty Dog / PlayStation.
Prepared for the Worst is the silver trophy for finding every workbench in The Last of Us Part I. Workbenches are where Joel spends parts on gun upgrades, and they are spread across seven chapters.
The Tommy's Dam bench sits on the left side of the control room and is destroyed when bandits attack, so use it early. Pittsburgh's three are spread out: past the hunters' sleeping quarters, in an office before the hotel kitchen, and on a second floor reached through a garage door. In Bus Depot one is inside the hospital ventilation route where Ellie lets Joel in.