You'll find yourself in New York and have to climb a tower so you can base jump to a nearby building. For the most part, the building is pretty straight forward and requires you to navigate your way to the top as if you were one of your ancestors. Make your way along over the pipes and ducts, up elevator shafts, etc. until you get outside.
Once outside, turn right and you'll see a large crane structure situated on yellow girders and hanging out of the city. Jump to the yellow girders and then scale the crane. Use the steel I-beams to move around the outside of the building until you run out of beams. From there, you'll find some wire running along small yellow pipes on the side of the wall. The pipes have just enough space between them to climb them as if it were a hole running up the middle of a cliff face.
At the top, run around the construction site in a sort of counter clockwise direction until you have to jump to another I-Beam off the side of the building. Jump to the roof and then climb up the small machine in front of you. Use this to jump across to the gated off area where the crane is. Scale the crane all the way to the top and at the top, prepare to jump. Rebecca will tell you to jump and then tell you again when to pull the chute. When she does, hit any button to pull the cord. At this point, just glide your way over to the next building and aim for the helipad.
