[8.1]. Mission 1 - dataDyne Central: Extraction (2)

Access the Foyer Elevator: Equip Night Vision Goggles. Proceed forward and kill the guard behind the desk with a headshot (a shot to the head). Turn right, find and open a hidden door. Kill the guard inside, grab ammo, then proceed right to kill two more guards. Clear the main room of guards until you reach stairs with guards at the top. Kill them, ascend the stairs, turn left, and enter the elevator.

Defeat Cassandra's Body Guards: As the elevator ascends, remove Night Vision Goggles. Exit the elevator, turn right, go around the corner, and kill the guard. Proceed through the doors behind him. Follow the hallway to two of Cassandra's body guards; kill them and take their shotguns and cartridges. Enter the single door at the end of the hallway and kill another body guard. Backtrack to the first elevator (not the one just used) and go up one floor. Turn right from the elevator, go around the corner, and kill the helmeted guards. Head through the door to the left of the guards. Navigate the inner office, turn left, and go through the hidden sliding door. Enter the next unlocked door and kill another body guard. Proceed forward, clear the room ahead of body guards, then return to the elevator and use the door next to it. Ascend the stairs to the next floor. Turn right and kill the guard arguing with scientists, allowing the scientists to run away. Take the Rocket Launcher.

Destroy dataDyne Hover Copter: Turn to face the large window on your left. Equip the Rocket Launcher and wait for the Hovercopter outside. Shoot it when you have a clear shot to complete this objective.

Defeat Cassandra's Body Guards (Continued): Turn right and use the door near where you acquired the Rocket Launcher. Take the stairs to the top floor and proceed through the steel grate. Outside, kill the remaining bodyguards.

Rendezvous at helipad: Take the ramps back to the helipad to complete the final objective.