Post War Dreams

After you finish the wooded area with the train track, you'll come to find yourself in an industrial area. You'll need to progress through a handful of obstacles until you eventually go down an elevator and into a crowded room with a lot of pipes:

Once inside, head right and climb up the first ladder you come across (it's a little hard to see as it'll be between two support beams). Climb all the way up to the top and head right. Kill any Militia members in your way and all the way on the right will be Hudson. Speak with him and exhaust the conversation. He'll task you with finding Antonio.

From here, head back to the left and all the way down the ladder you just climbed up. Head all the way right, past the first ladder, and jump off the ledge when you get to it (there's a ladder here, you can use that instead if you want). When you land, use the ladder to your left to climb down one more level. Go all the way right to find Antonio sitting in a chair. Speak with him and exhaust the conversation. The trophy will unlock shortly after the conversation has ended.

Note: You will need to go back up and speak with Hudson to continue on with the story.