[8.3]. Mission 3 - G5 Building: Reconnaissance

Photograph meeting conspirators: You will encounter invisible guards. Wait until they start shooting to see their outlines, then kill them. One guard carries a necessary card key. After obtaining the key card, exit through the only unlocked door. Kill the guard at the end of the hall and activate the control panel to the right of the door before entering the door at the end of the hallway. Turn right to find a door behind glass windows. Entering this area activates lights and more invisible guards; kill them and retrieve another card key. Enter the door within the glass case. Immediately shoot the guard by surprise, walk past the stairs, and grab the shield next to them. Go up the stairs and through the door at the top. Turn right and go down a small hallway, killing the two guards. Proceed to the Alarm next to the first door on your right. Kill the third guard before they reach the Alarm. De-activate all four control panels in this area to disable the lasers; they will turn green when activated. Head through the door next to the alarm and kill the guard at the bottom of the stairs. Go right and down the corridor, then defeat the three guards in the next room. Use the large control panel to disable the damping field generator (optional, but helpful). Return to the room with the Alarm. Turn right and shoot the guard on the other side of the door through the glass. Go up the stairs at the other end of this room. At the top, go right, crouch under the roof, and follow the piping to the area where you killed that guard. Use the Camspy and follow the pipes into the next room, ensuring it is not seen by any guards to avoid failing the mission. Completing this step fulfills the first objective.

Retrieve Dr. Caroll backup from safe: Proceed forward and drop down, killing any nearby guards. If the alarm is triggered, turn it off. Go through the door to the left of the alarm, kill any guards near the stairs, and then ascend the stairs. Turn right at the top, deal with any guards, and enter the door in the green area on the right. Turn right inside this room and use the Door Decoder on the control panel next to the door. Wait for 1 minute to open the vault, killing any guards that approach. Once the minute is up, open the large blue vault in the back of the room and take the Backup Disc. This completes objective 2.

Exit G5 Building: Run out of the room, head straight towards the explosion, and go through the hole in the wall to complete your third objective and exit Mission 3.