Metal Gear Solid 4: Guns of the Patriots

Missable When you reach Act 4: Twin Suns, you will be at Shadow Moses Island, the place where the first Metal Gear Solid game took in. If you equip your camera, you will find ghosts standing in specific areas. You can find the Digital Camera during the Mission Briefings of Act 1 until Act 4. You need to control the Mk. II to get it from Sunny’s Desk. At some part during the briefing, you will have a two-windows perspective. You will see "Press Select for help" on the bottom of the screen. Press the button to switch to 1st Person Full Screen Mode, hit the button and then to control the Mk. II. Move it around with the Left Analogue Stick. There are 30 ghosts in total on Shadow Moses but you only need to photograph 5 of them. Note that until you take the picture, you won’t be able to see the ghosts. However, if you have obtained the Sorrow Doll from the battle with Screaming Mantis and started a new playthrough, you will be able to see them before you take the picture. You must have the Doll currently equipped for them to appear though. Thanks to Squ1rr3l-K1ng for the video.

Heliport: 5 Ghosts

1. Nishimura: At the HeliPort Landing Pad, look above the chaff grenades with your camera.
2. Muraoka: While facing the Cargo Elevator south of the HeliPort, look to the left of it. You may have to zoom in a bit to see it clearly.
3. Artic WarFare Troop: On the west of the HeliPort, enter the southern-most Hanger. Inside on your left are two crates and a Compress near them. The ghost is between them.
4. Shigeno: North-east from the HeliPort, you will see some stairs and next to them a surveillance camera. The ghost is near that camera.
5. Tanaka: To the west of the main door, you will find a vent and above it, the ghost.

Tank Hanger: 4 Ghosts

1. Master Miller: Enter the west vent outside at the Heliport. You will reach a fork that will go left and right. Choose either path, continue a bit, then turn around and look at the fork. The ghost is there.
2. Light Infantry Soldier: Enter the Hanger and look on the left side of the tank. The Ghost is standing there.
3. Decoy Octopus: In the northwest part of the Hanger on the first floor, there is an elevator. At the top left of the elevator door near the light you can find the ghost.
4. DARPA Chief: In the north-east part of the Hanger is a half closed hanger door. Crouch under it to get inside. At the next passageway, turn around and look to the left in the corner.

Canyon: 3 Ghosts

1. Kobayashi: Enter the canyon and you will see three rock formations around you. One to the east and two to the west. Head up to the second rock on your left. Go a little on the northside of the rock and look above it.
2. Korekado: Go to the exit of the canyon going to Nuclear Storage and to your right, you will see a tank with some pipes. The ghost is above these pipes.
3. Vulcan Raven: Go to the exit of the canyon going to Nuclear Storage and to your left, you will see some ammo on the ground. This ghost is a little tricky to see because of the mountain, it's a bit more to the left. Hug the mountain wall and start heading towards it.

Nuclear Warhead Storage BLDG 1F: 2 Ghosts

1. Makimura: Enter the storage and go to the catwalk to the west. Follow it until you reach a window with a control panel. The ghost is in the window.
2. NBC Warfare Troop: Crawl under the door and you will see two giant missiles in the main room. At the tip of the western-most missile lies the ghost.

Nuclear Warhead Storage BLDG B2: 5 Ghosts

1. Matsuhana: Enter the hallway filled with blood and you will hear a flashback of Grey Fox killing the soldiers. At the inner corner of this hallway you can find the ghost.
2. Hideo Kojima: At the north side of the office there is a "Policenauts" poster right above where you put the password. The ghost is a little above the poster and to the left.
3. AT President Baker: At the west side of the office there are a bunch of computers along with some posters. The ghost can be found floating around these posters.
4. Takabe: At the middle of the office, there is a structure like a cubicle. At the south-west corner is the ghost.
5. Shimizu: When the Gekko breaks through the roof, look up into that hole.

Snow Field: 4 Ghosts

1. Sato: At the north-east part of the area, you will find the destroyed from the MGS1 Hind-D. The ghost is at the wreckage.
2. Shinkawa: At the west side of the southern-most Communications Tower, face the tower and see that a part of it sticks outwards from the rest. Look a bit to the right to find the ghost.
3. Nakamura: Enter the Snow Field area and see the two railings that lead to the first Communication Tower. At the sound end of this railing, at a rectangle-like, you will find the ghost.
4. Sniper Wolf: At the north end of the snowfield there are a bunch of small hangers. The ghost is on the door of the locked hanger to the east of the one you can enter.

Casting Facility: 2 Ghosts

1. Hirano: In the South facility, at the middle of the room there is a mechanism. The ghost can be found there.
2. Sasaki: In the North facility, at the middle of the northern part of the area, you will see a conveyor belt. You have to look at the small gap from the south end of it which is under the conveyor to find the ghost.

Underground Base: 2 Ghosts

1. Kaneda: Enter the area and go down the stairs. Then turn around and look back at them.
2. Negishi: In the second room of the area, look at the waterdall at the west side of the room.

Underground Supply: 3 Ghosts

1. Kimura: Behind Metal Gear Rex, look up to the side of the head. It'll be on the left.
2. Grey Fox: Stand in front of Rex and look under its right foot.
3. Liquid Snake: Stand in front of Rex and look into the open cock pit.