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

Shut down air intercept radar: Immediately strafe left for cover (press the cover button to crouch behind walls or objects) behind a pillar. Eliminate guards, collect MagSecs, ammo, and grenades, avoiding the automatic machine gun. Proceed away from the helipad down the path, destroying another automatic gun with your MagSec. Around the corner, shoot the machine gun on your left. Continue forward, turn right, and eliminate the two guards near the large tower using your Falcon or MagSec. Run past the tower, eliminating any guards emerging from the tunnel. If you have grenades, toss one through the hole in the fence to the left of the tunnel onto the snow to detonate mines and retrieve the Rocket Launcher from the helipad. Ascend the tower and press the red button to open the gate. Descend the tower and enter the tunnel. At the tunnel's end, deal with the guards and the machine gun on your left. Return to the Rocket Launcher helipad and toss a grenade towards the cliff to detonate any remaining mines. Veer left from the helipad to find a small opening in the steel wall; crouch and enter. Find and take the armor inside the tunnel. Exit the tunnel, kill the guard outside, and follow the path to the end. 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 down the side of the wall. Turn left again at the end and destroy the machine gun on the wall 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.

Plant comms device on antenna: Return to the tunnel where you acquired the Rocket Launcher and follow it to the other side. Turn left to find the antenna on a rock. Press the green button behind it to lower it. Equip your Comms Rider and throw it onto the antenna.

Disable all robot interceptors: 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.

Gain entrance to hangar lift: Ascend to the top, move forward, 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 the large roll-up gates, use the key-reader on the left by pressing B to open the gates. Enter and proceed up the elevator on the left. Exit the elevator and eliminate the guards, being wary of those with grenades.

Make contact with CI spy: Run to the ramp at the back of the room and ascend it. Follow the path at the top to the elevator at the end. Exit the elevator, follow the path again until you reach another ramp. Eliminate any encountered guards. Run underneath the ramp and through the open door to meet the CI spy and complete the first part of Mission 4.