Part 9

Swim east through the shallow water and head north to dry land.

Head south, eliminate the guard, and then head west, eliminating the next guard.

Head north and use CARD 6 to enter the room on the right wall to find PLASTIC EXPLOSIVES.

Stock up on PLASTIC EXPLOSIVES and return to where you got on land.

Head north and use CARD 7 to exit BUILDING TWO into the SCORPION DESERT.

Equip the COMPASS and head north through screens of scorpions, using the ANTIDOTE if stung and RATIONS if needed.

Continue until you reach trucks and a door, where guards will emerge.

Ignore Big Boss's call to enter the far-right truck; instead, enter the center truck on the left and the truck near the door on the right for AMMO. Be cautious of the four guards protecting the right truck.

Use CARD 7 to enter BUILDING THREE.

You will be ambushed by four guards. Enter the door on the left using CARD 1, but do not move inside as it is a trap.

Exit the room and use a PLASTIC EXPLOSIVE on the right side of the north wall.

Hug the right wall and head north, navigating traps by staying on the right wall until you reach boxes, then head left and up at the corner of the box to avoid the first trap.

Proceed over the first trap until past the elevator, then head north and right to enter the elevator.

Take the elevator down to the 100th floor basement and exit.

Avoid the two cameras on the north wall by hiding behind the wall in the center of the room.

Use a PLASTIC EXPLOSIVE to blow open the wall in front of the center wall to find the OXYGEN TANK.

Return to the first floor of BUILDING TWO.

Head right, equip the OXYGEN TANK, and swim north until you reach shallow water.

Exit the water, avoid guards, and head north.

On the screen with an electrified floor, use REMOTE-CONTROLLED MISSLES to destroy the control panel next to the door on the left.

Enter the door on the left using CARD 1 to find two boxes of AMMO.

Use CARD 7 to enter the door on the right to face Coward Duck.

During the fight with Coward Duck, Jennifer will call, informing you he has CARD 8 and that her brother is among the POWs.

Head north along the left wall, then up hugging the boxes, and rescue the POW on the left.

Use your HANDGUN to defeat Coward Duck with approximately 10 shots.

After the fight, take CARD 8.

Rescue the POW on the right and Jennifer's brother in the center.

He will advise using the ladder on the left when escaping Outer Heaven.

Stock up on AMMO, PLASTIC EXPLOSIVES, and RATIONS from the rooms near the Coward Duck room, the room before exiting BUILDING TWO, and the first floor basement of BUILDING TWO, respectively.

Return to the 100th floor basement of BUILDING THREE.

Avoid cameras and use CARD 8 to enter the door on the right wall.

Enter the room and rescue the POW, who reveals Big Boss is the leader of Outer Heaven.

Exit the room and head west. Ignore Big Boss's call to stop the operation.

Run past the cameras on the south-facing walls and use CARD 8 to enter the door on the north wall.

Equip your GAS MASK and head to the northeast part of the room.

Punch the wall until you hear a tapping sound, then use a PLASTIC EXPLOSIVE to blow it up.

Head through the passage into the next room.

Follow the left wall to the door and use CARD 1 to enter.

Equip your MINE DETECTOR and move quickly through the room with MINES and gas.

Use CARD 1 to enter the next door, which has an electric floor.