[8.3]. Mission 3 - G5 Building: Reconnaissance (2)

Start by facing invisible guards. Wait for them to attack to see their outlines, then kill them. One guard carries a necessary card key. Exit through the only unlocked door.

Kill the guard at the end of the hall. Activate the control panel to the right of the door, then proceed through the door at the end of the hallway.

In the next area, turn right and enter the door within the glass windows. This action will trigger lights and more invisible guards. Eliminate them and collect the card key from one of them. Then, enter the door situated inside the glass case.

Immediately upon entering, shoot the guard. Walk past the stairs, grab the shield nearby, and ascend the stairs. Go through the door at the top, turn right, and proceed down a short hallway. Kill the two guards present.

Locate the Alarm panel and head towards it. Ensure the third guard does not reach the Alarm; eliminate him as he enters. Find and deactivate all four control panels in this area to disable the lasers. Activated panels will turn green.

Proceed through the door next to the Alarm panel and kill the guard at the bottom of the stairs. At the stair's base, turn right and move down the corridor. In the subsequent room, defeat the three guards.

Approach the large control panel and use the 'B' button to disable the damping field generator (optional, but helpful). Return to the room containing the Alarm panel.

In the Alarm room, turn right and face the door. Shoot the guard positioned on the other side through the glass. Ascend the stairs at the far end of the room. At the top, turn right, crouch to pass under the roof, and follow the piping back to the area where you previously killed a guard.

Deploy the Camspy and guide it along the pipes into the next room. Avoid detection by any guards, as this will result in mission failure. Successfully maneuvering the Camspy into the room completes this objective.

Move forward and drop down. Eliminate any guards in your vicinity. If the alarm is triggered, deactivate it.

Go through the door to the left of the Alarm panel, neutralize any guards near the stairs, and then ascend the stairs. At the top, turn right, deal with any guards present, and enter the door in the green area on the right.

Inside this room, turn right. Use the Door Decoder on the control panel adjacent to the door. You will need to wait 1 minute for the vault to open. During this time, defend against any guards that may approach.

Once the minute has elapsed, open the large blue vault located at the back of the room and retrieve the Backup Disc. This completes objective 2.

Exit the vault room and proceed straight towards the explosion. Go through the resulting hole in the wall to complete objective 3 and exit Mission 3.

Note: If no explosion occurs, return to the level where you placed the mine in Chicago (Stealth), locate the concrete door, and detonate it yourself.