2. The Unlucky Ones
Rescue the Remnant prisoners
Gear Aquired: Infiltrator
Credits Earned: 3000
Climb over to the building in the train yard. The climb starting point is above the cave on the map. You can then unlock a door that leads to the room in the train yard area, where Lara shot the glass window to help some prisoner that died shortly afterwards.
The prisoners are kept downstairs.