Checkpoint A. Make your way across the rooftops, and enter the first door. 
  Walk down a short corridor, and enter the room. The Mirror's Edge logo is on 
  the whiteboard. A bag is in the corner on your left, behind some boxes.
  Checkpoint C. Use the elevator to go down to an open construction area. As you 
  exit the corridor from the elevator, walk forward to the middle of this area. 
  Look to your left to see yellow covers. There is a large white bundle with the 
  Mirror's Edge logo on the side. Climb on top of the bundle, then jump up on 
  the walkways. Turn to face the opposite side, jump, then turn and jump to 
  reach the second level and a bag.
  Checkpoint C. Get through the construction area, and enter the vent shaft. 
  Continue along, then drop down, and walk ahead. A bag is on the left at the 
  end.