[8.4]. Mission 4 - Area 51: Infiltration (3)

Immediately strafe left for cover (press the cover button to crouch behind walls or objects) behind a pillar and eliminate passing guards. Collect MagSecs and ammo, being wary of the automatic machine gun. Proceed away from the helipad down the path, destroying the next automatic gun with your MagSec. Around the corner, shoot the machine gun on your left and continue forward. Use your Falcon or MagSec to destroy the two guards near the large tower. After passing the tower, eliminate any guards emerging from the tunnel. If you have grenades, toss one onto the snow to the left of the tunnel to detonate mines and access the Rocket Launcher on the helipad. Take the Rocket Launcher and ascend the tower. Press the red button at the top to open the gate, then descend and enter the tunnel. At the tunnel's end, deal with the guards and the machine gun on the left. Return to the helipad, stand on it, and toss a grenade towards the cliff to detonate more mines. Veer left from the helipad to find a small opening in the steel wall; crouch and enter. Collect the armor towards the end of this passage, exit, kill the guard, and follow the path. Turn right to destroy the two machine guns on the wall. Turn around, pass the hole in the wall on your right, turn left, and proceed along the wall. At the end, turn left again and destroy the machine gun above you. Turn around, descend the ladder, and enter the hole in the ground. Enter the silver door, veer right, and reach the back of the room. Plant your Explosives on the Computer Panel. Quickly exit the room and ascend the ladder again. The first objective is now complete.

Return to the tunnel where you acquired the Rocket Launcher and follow it to the other side. Go left to find the antenna on a rock. Approach it and press the green button behind it to lower it. Equip your Comms Rider and throw it onto the antenna to complete the second objective.

Go behind the antenna and destroy the robot interceptors located in two wall openings. Return to the tower, run past it, and destroy the robot interceptor in the large area to the right of the tower using your Rocket Launcher. Objective 3 is now complete.

Proceed forward at the top and shoot the guard in the middle of the large open area. Take the key card he drops. To the right of where the guard stood, next to large roll-up gates, is a key-reader on the left. Press B to activate it and open the gates. Enter the gates and ascend the elevator on the left. Exit the elevator and eliminate the guards using your Dragon, being cautious of those with grenades. Successfully exiting the elevator completes your second objective.

Run to the ramp at the back of the room and ascend it. Follow the path at the top and use the elevator at the end. Exit the elevator and continue along the path until you reach another ramp. Eliminate any guards encountered. Run underneath the ramp and through the open door to meet the CI spy and conclude the first part of Mission 4.