Mirror's Edge -
Here, two Blues wielding automatic pistols will burst out of the right hand doors. Disarm the closer one, and use his gun to kill the second one. After the fight, continue right up the red pipe, over the fence, and on to the roof ahead. Jump on the fans to the left, hop between the red pipes, and on to the second set of fans. Leap forward on top of the construction elevator, Wall Run right, and Wall Jump left to land on the handing block. Enter the door ahead and ride the elevator to reach the atrium. Proceed right towards the lobby entrance and two more Blues will pop out from behind columns. Use the heavy machine gun to kill these last two enemies, and continue forward through the revolving door to complete the chapter.