[8.3]. Mission 3 - Chicago: Stealth

Retrieve drop point equipment: Walk to the end of the alley and take down the first guard. Peek around the corner and perform a headshot (a shot that lands on the enemy's head, usually an instant kill) (a shot to the head that instantly incapacitates or kills an enemy) on the next guard. Go left down the stairs and through the doorway. Quietly take out the guard near the taxi, then the guard to your right. Avoid the patrolling floating robot as it cannot be killed. Continue down the street, past the limo, and turn right. Go down the alley on the right and kill the guard inside. Continue down the street, past the limo, and turn right again. At the end of the alley, drop into the storm drain. Turn around and go under the grates to find the equipment.

Create vehicular diversion: Return to where the limo was, and continue until you find an opening in the fence leading to a sewer. Kill the guards in the sewer and proceed through it. Exit the sewer the way you came in, turn right, and go to the taxi. Use the Reprogrammer on the taxi. After a short wait, the taxi will crash, creating the diversion.

Gain Entry to G5 building: Enter the red hallway across from the taxi. In the next room, knock out the two civilians. Move the trash bin next to the barrels in the corner, then shoot the barrels to cause an explosion. Collect the BombSpy from the ground. Backtrack to the hallway and use the BombSpy to look into the next hallway where the trash bin was. Activate the BombSpy in the area with the guards to eliminate them. Proceed to where you activated the BombSpy. To the right of the explosion site, kill the guards. Go to the top of the stairs and place the Remote Mine on the concrete door, but do not detonate it yet. Exit this area, go straight ahead, and enter the room across from the storm drain. Enter the giant elevator to complete the objective and the first part of Mission 3.