Reward: 5,000 Survivor XP
Cross Old Town to find Troy.
Ask Troy to Help You Find Jade
You’re now in Old Town (Sector 0). This area of the city has tall buildings and better construction. The Grappling Hook is even better here than ever before because it allows you to zip between buildings without trouble.
Lacking that, use the ledges, walkways, and other precarious paths that people have set up to traverse the area without sticking to the streets. Your goal is to reach Troy, who is in a set of tall towers across the city.
Get there, climb your way up the scaffolding, and meet Troy. That scene ends the mission.