Jump down to the street and grapple around the buildings and signs just ahead to get a feel for the arm. You should knock a few Challenges off your list just by swinging around here. Collectible 1 The ...

Work your way up. The exit is in the top left corner. There's a soldier with a rocket launcher there, and he throws grenades if you get too close. The layout makes this one tricky, so stay on the edge ...