Part 4

Exit the initial room and head south. Take out the two patrolling guards behind the tanks.

Proceed left. A guard will attempt to capture you; allow this to happen.

After being captured and taken to the secret cell, Big Boss will call. End the call and punch the north part of the west wall until a strange tap is heard, then break through to find Grey Fox.

Rescue Grey Fox. He will inform you about Metal Gear and Dr. Pettrovich Madnar.

Punch the south wall until a strange tap is heard, then break through to enter the first-floor basement of Building One. You will have no equipment or weapons.

Head right. In the next room, the boss Shoot Gunner will appear.

Hide behind the crates on the right. Call Big Boss (120.85) who will inform you that your weapons are in one of the south rooms.

Break the door on the right to retrieve your weapons and equipment.

Exit that room and break the door on the left to find CARD 3 and AMMO.

Return to the crates. Equip Remote-Controlled Missiles (F3) and hit Shoot Gunner three or four times to defeat him.

After the battle, you will find a TRANSMITTER. Press Space Bar to get rid of it as it alerts guards.

Use CARD 3 (F3) to exit the room via the east door.

In the spiral area, kill the dog and punch the wall across from the north of the door. Use PLASTIC EXPLOSIVE (F2) to destroy the wall.

Head east, then follow the path until you need to use another PLASTIC EXPLOSIVE (F2) on the left wall.

Continue until you reach a wall, then go back one screen. Punch the south wall until a strange tap is heard, use PLASTIC EXPLOSIVE (F2) to blow it up, and follow the path to a door.

Use CARD 3 (F3) to open the door and take the BOMB BLAST SUIT from the desk.

Return to the spiral area and head north. On the next screen, tap the center of the west wall until a strange tap is heard, then use PLASTIC EXPLOSIVE (F2) to blow it up and enter to find the UNIFORM.

Exit and head back down. Follow the path around the spiral to the next screen. Tap the left-center part of the south wall until a strange tap is heard, use PLASTIC EXPLOSIVE (F2) to blow it up, and find AMMO and PLASTIC EXPLOSIVES.

Follow the path north to an elevator and take it to the second floor.

On the second floor, use crates to avoid the camera and head south. Take out the sleeping guard and go up the left path.

When you emerge, take out the three guards and use CARD 3 (F3) to enter the west door.

Proceed through the next room and quickly pass through the room with the rolling pin, exiting via the south door.

Avoid the guard behind the crates and head south.

Take out or avoid the three guards in the south part of the room and head south.

Enter the left door to find MINES on a desk surrounded by sleeping guards. Take the MINES after dealing with the guards.

Avoid other guards and use CARD 3 (F3) to enter the right door. Rescue the POW inside, who will tell you about reaching the courtyard by parachute.