Part 5

From the starting platform, wallrun over a gap and springboard to a lift. Turn around and jump to the platform above. Jump to the pipe in front of you and climb up. Jump over the ladder on the left. On the platform, activate a crane. Jump onto the beams to the right and wait for the other crane to rise so you can jump on it. Once high enough, jump onto the crane.

Wait for the crane to align with the top of the giant drain and jump off. Head straight towards an orange container; find BAG09 behind the forklift to its left. Return to the drain and go around its right side towards a doorway. After passing two forklifts side-by-side, head for the rear of the trucks parked next to the building with the door. Climb onto the loading dock behind them. Head left to a pallet with boxes, climb over it, and drop down. Kick in the door on the right, follow the hallway to an elevator, and go up. Exit and proceed through the doorway on the right.

Kick through the door on the left to the outside. Chase Jacknife down a zipline. Slide under pipes and jump off the ledge. Drop off the building you land on and climb over the fence. Wallclimb to the top of the building in front of you, then to the slightly higher building ahead. Jump over the gap, springboard up to the next rooftop, slide under some pipes, and climb up the building on the left. Climb to the top of the next building, jump off the end of the boards to the next building, and jump over a gap to some ducts on the left. Jump off the second duct to the next building. Climb up to the roof on the left and jump another gap. Climb over the fence and head left. Jump across a gap to a lower building, hop over ducts, and climb the building in front of you. Jump to the zipline on the right and slide down. Drop off the building you land on, climb over the fence, and head right. Jump over gaps to some ducts, then jump from the ducts over the fence to the left. Use objects on the ground to springboard to the top of the building on the left. Jump over a gap and drop off the building to the right. Run along the side of the building to a door in the corner. Head through and follow the hallway to an elevator.

Go up the elevator. Exit and head left, then jump off the ledge. Swing on the bars on the side of the next building to reach equipment. Jump to the pipe, climb up, and jump to the next pipe to the right. Jump to the final pipe to the right and then onto a platform. Wallrun, turn, and jump to the building on the right. Use objects on the right to springboard over the next building. Drop off and use boards to jump to scaffolding across the gap. Jump left over the gap and head for the ramp leading up. At the top, turn around and go to the opening in the fence. Head through.

Hop over the fence on the right. Jump off the far side of the building using the ramp. Jump to the building on the left, then jump for the pipes on the next building and climb up. Go to the back of the building in front of you, wallrun, turn, and jump from the nearby building to get on top. Jump to that building. Head right of the fence, jump to the duct on the next building, then wallrun, turn, and jump to get inside the fenced area. Alternatively, jump the gap back over. Move straight, then right, and right again at the edge of the building. Jump off the corner at an angle to reach the next building. Head up the ramp, jump the gap to the equipment, then the gap to the duct on the side of the building. Jump off the duct to the right over the fence. Wallclimb up the building in front of you. Turn right, wallclimb, turn, and jump to reach the bar above. Swing to the rooftop. Slide under the ducts. Wallclimb to the top of the building to the left. Head for the door across the gap. Turn the corner, wallrun, turn, and jump to a platform above on the right. Head into the ductwork. After dropping out, find BAG10 behind stacked boxes. Squeeze through vertical ducts and the wall. Go through the door to the right at the end of the hallway. Head up the stairs and wallrun to the other platform. Head around the corner left and through the door at the end on the left. Go through another door at the end of another hallway on the left. Enter the open door on the right and into the ceiling duct. Follow the duct around the corner and climb up to a higher one. Move a bit and drop down. Continue to the end of the duct.

You can grab the gun off the desk if desired.