Metal Gear Solid 4 secrets

This page will list all the secrets and unlockables in Metal Gear Solid 4: Guns of the Patriots.

Bandana
The Bandana can be obtained by finishing the game without killing anyone or by buying it from Drebin for 5,000,000 Drebin Points or 2,500,000 in Act 5. When worn, Snake will have infinite ammo.

Digital Camera
The Digital Camera can be found behind Sunny's desk during Act One, Two or Three's mission briefing, or in the kitchen during Act Four's Mission Briefing. The camera allows you to take pictures in-game and access them from the photo album in the main menu which can then be exported to the PS3s HDD. If you pick it up during Act 4, you will find pictures of Sunny and Naomi on the camera.

Stealth Camouflage
The Stealth Camouflage can be obtained by finishing the game without entering alert phase or by buying it from Drebin for 5,000,000 Drebin Points or 2,500,000 during Act 5. When worn, Snake's camo index will always be 100%. However, Gekkos will still be able to see Snake and PMC soldiers will still hear his footsteps. Also, during an alert phase, the camo index will be 95%, allowing PMC soldiers to see Snake.

Altair
To obtain the Altair camouflage, you must stun or kill more than fifty enemies with the knife, have more than fifty CQC chokeholds, and have fewer than 25 alerts, giving you the Assassin emblem. This costume is the same clothing Altaïr wears in Assassin's Creed. It was first revealed April 1, 2008, in the April Fool's 2008 joke trailer.

Corpse Camo
To obtain the Corpse Camo, you must continues 25 times or more, be alerted 75 times or more, and kill 250 or fewer, earning the emblems below Centipede.

Middle East Rebel Disguise
To obtain the Middle East Rebel Disguise, you must explore the northeast section of the safehouse in Act One, where it will be in one of the lockers.

South American Rebel Disguise
To obtain the South American Rebel Disguise, you must explore the Cove Valley Village in Act Two. Rescue the rebels in the village, then follow them into the building they restock from.

Suit
To obtain the Suit, you must beat the game once.

Beauty and the Beast Unit
To obtain the face camo of each individual The Beauty and the Beast Unit member, you must defeat their beauty form non-lethally.

"Big Boss"
To obtain the "Big Boss" face camo, earn the Big Boss emblem. While wearing this camo, upon seeing Snake, enemies will become terrified of him or faint.

Colonel Campbell
To obtain the Colonel Campbell face camo, stun Campbell with the Metal Gear Mk. II during Act One's mission briefing.

Drebin 893
To obtain the Drebin 893 face camo, you must purchase and keep 60 weapons from Drebin 893.

MGS Snake
To obtain the MGS Snake face camo, you must successfully clear Snake's MGS1 nightmare at the beginning of Act 4.

Otacon
To obtain the Otacon face camo, you must stun Otacon with the Metal Gear Mk. II during any mission briefing.

Raiden (Visor Down)
To obtain the Raiden (Visor Down) face camo, you must stun Sunny with the Metal Gear Mk. II during any mission briefing.

Raiden (Visor Up)
To obtain the Raiden (Visor Up) face camo, you must stun Naomi Hunter with the Metal Gear Mk. II during Act 3's mission briefing. Weapons: Mark 23: Under a truck on the heliport in act 4

Items

 * Digital Camera: In the Nomad vehicle during the mission intermission; you can unlock a special photo by picking up this item in stage 4 instead of earlier.
 * Scanning Plug S: Log more than 10 hours of Metal Gear Online play time on the same profile as your Metal Gear 4 game. You purchase this from Drebin.
 * Stealth Item: Complete a single-player session without instigating a single alert (caution is okay, but not alert). You can do this on any difficulty.
 * Thor 45-70: Earn the Fox Hound emblem on a single-player session.

Weapons

 * Long Barreled Desert Eagle: Earn the Fox emblem on a single-player session.
 * Patriot Future Assault Weapon: Earn the Big Boss emblem on a single-player session.
 * Race (Ricochet):Gun Clear the single-player game once.
 * Rail Gun: Beat Crying Wolf.
 * Solar Gun: Collect the five statues (those of the four Battle Beauties and the Frog Soldier/Haven Troopers in stage 1) using non-lethal means on their respective idols.
 * World War I Pistol: Earn the Hound emblem on a single-player session.

Codes

 * 100,000 DP: 14893
 * iPod Song 1: 78925
 * iPod Song 2: 13462

Emblems
asingle person (Gekkos and Dwarf Gekkos dont count). Puma: Get over 75 alert phases, over 250 kills, and over 25 continues.
 * Ant: Shake 50 enemies for items.
 * Assassin: Beat the game with 50+ knife kills, 50+ CQC holds, and 25 or less alerts.
 * Bear: Choke 100 enemies to death.
 * Bee:Use the Scanning Plug S or Syringe on 50 enemies.
 * Big Boss: Beat the game on the highest difficulty with no deaths, no alerts, no kills, no recovery items, no stealth suit, no bandanna items, in under 5 hours.
 * Blue Bird: Give friendly soldiers 50 items.
 * Centipede: Get less than 75 alert phases, less than 250 kills, and over 25 continues.
 * Chicken: Get over 150 alert phases, over 500 kills, over 50 continues, use over 50 recovery items and finish the game in over 35 hours.
 * Cow: Activate over 100 alerts.
 * Crocodile: Have over 400 kills.
 * Eagle: Get 150 headshots.
 * Fox: Beat the game on normal or higher w/ no deaths, 5 or less alerts, no kills, no recovery items, no stealth suit, no bandanna items, in under 6 hours.
 * Fox Hound: Beat the game on hard or higher w/ no deaths, 3 or less alerts, no kills, no recovery items, no stealth suit, no bandanna items, in under 5.5 hours.
 * Frog: Dive or roll 200 times.
 * Gecko: Press against walls for a total of 1 hour.
 * Giant Panda: Complete the game after 30 cumulative hours of play.
 * Gibbon: Hold up 50 enemies.
 * Hawk: Be admired by 25 friendly soldiers.
 * Hog: Get 10 combat highs Hound Emblem Beat the game on hard or higher w/ no deaths, 3 or less alerts, no kills, no recovery items, no stealth suit, no bandanna items, in under 6.5 hours.
 * Hyena: Pick up 400 dropped weapons.
 * Inch Worm: Crawl on the ground for a total of 1 hour.
 * Jaguar: Get over 75 alert phases, less than 250 kills, and less than 25 continues.
 * Leopard: Get over 75 alert phases, less than 250 kills, and over 25 continues.
 * Little Gray: Collect all 69 weapons.
 * Lobster: Spend a total of 2.5 hours crouching.
 * Mantis: Finish the game with no alerts activated, no continues, no rations, noodles or regains used and in under 5 hours.
 * Octopus: Beat the game without activating any alert phases. Panther Get over 75 alert phases, over 250 kills, and less than 25 coninues.
 * Pig: Use more than 50 recovery items.
 * Pigeon: Beat the game without killing.
 * Rabbit: Look at 100 Playboy pages.
 * Raven: Beat the game in under 5 hours.
 * Scarab: Perform over 100 rolls.
 * Scorpion: Get less than 75 alert Phases, less than 250 kills, and less than 25 continues.
 * Spider: Get less than 75 alert phases, over 250 kills, and over 25 continues.
 * Tarantula: Get less than 75 alert phases, over 250 kills, and less than 25 continues.
 * Tortoise: Spend more than 60 minutes inside the drum can or card board box (this can be done throughout the game, not all at once).
 * Wolf: Beat the game with no continues and no rations, regains, or noodles used.

Ammo

 * Emotive Ammo (Cry): Finish game once.
 * Emotive Ammo (Laughter): Finish game once.
 * Emotive Ammo (Rage): Finish game once.
 * Emotive Ammo (Scream): Finish game once.
 * Smoke Grenade (Blue): Finish game once.
 * Smoke Grenade (Green): Finish game once.
 * Smoke Grenade (Red): Finish game once.
 * Smoke Grenade (Yellow): Finish game once.

Misc

 * Big Boss Extreme Difficulty Setting: Complete the single-player mode once (and saving the cleared data).
 * Inheritence: You carry over your Drebin points, weapons, ammunition, items, and special items from a previous game upon game clear. However, Snake will need to encounter Metal Gear II in the first stage to get his stuff back. Be sure to save your cleared data upon game completion to track your items. Load the cleared data to reap your benefits.
 * New Combat Vests: Clear the single-player game once/
 * No More Camo: Shake the Sixaxis controller to return Snake's Octocamo to its neutral (black and blue) pigmentation.
 * Refill Psyche During Cut-Scenes: If during a cut-scene something causes Snakes psyche gauge to decrease just press X rapidly to replenish it.
 * Show Me Your Motions: When a character is introduced for the first time, press R2 to view that characters motion capture person instead of that person's voice actor.