Side Mission: A Thousand Words
To start this side mission, you have to find a box of photos in Prosperity, in the second floor balcony, beside a piano. Each photo location completed will award you with 1 perk point. You can locate them and complete them in any order. At least one photo location is locked by story progress. You can buy a map to reveal the location of these photo locations from your Cartography Facility after upgrading it.
To complete photo location, you simply need to stand on the obvious marker and face a structure, building, or whatever remained of it. Hold the Up button on your DPAD to pull the photo. You just need to align it to the structure and the game will automatically center it to the right position. Completing all photo locations will unlock the “Before” trophy. You can refer to the video compilation below (no particular order) or to the individual locations listed below.