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.
Metal Gear Solid 4: Guns of the Patriots PASSWORDS
Extras Screen Passwords
These passwords are entered at the Extras screen under Password after beating the game once on any difficulty. The items will be made available upon loading your save game or starting a new game (in which case you will gain access to them when you meet up with Metal Gear Mk. II; iPod songs are immediately available.)
Metal Gear Solid 4: Guns of the Patriots EASTER EGGS
Beauty and the Beast Photoshoot
Description
While fighting the second form of any B&B unit stall for 3 minutes. After that the whole area around Snake and the beast will go white. If you have obtained the camera already once you pull it out the Beast will pose for you.
Snake's iPod can download specific tunes throughout the course of the game. Some songs have an additional "secret" effect when it is played in the game.
Unlockable
How to Unlock
Beyond the Bounds (increases stun damage done by Snake from non-lethal weapons)
Stage 4 Shadow Moses, Tank Hangar. After power is restored, backtrack to the upper catwalk and explore all rooms
Big Boss (increase stun damage and increases Snake's accuracy when played)
Earn the Big Boss emblem
Bio Hazard
Frisk the restance fighter in Easter Europe.
Bio-hazard (cause soldiers held by Snake to scream in terror)
Stage 3 Europe, Midtown
Boktai 2 Theme
Act 2, Mission Briefing, upstairs in the Nomad
Bon Dance
Act 2, Marketplace
Destiny's Call (cause soldiers held by Snake to go enraged)
A random gift from a militia or rebel soldier if Snake gives them a healing item
Flowing Destiny (cause soldiers held by Snake to weep like a little girl)
Stage 4 Shadow Moses, Canyon. Before leaving the canyon area, examine the rocky walls for a hole hiding this item
Fury, The (cause soldiers held by Snake to go enraged)
Stage 2 South America, Cove Valley Village. Inside the fire ravaged house
Inorino Uta
Act 1, Mission Briefing
Level 3 Warning
Act 1, Advent Palace
Lunar Knights Main Theme
Act 4, Mission Briefing, upstairs in the Nomad
Metal Gear 20 Years History: Part 2
Act 4, Warhead Storage Building B2
Metal Gear 20 Years History: Part 3
Act 2, South America Confinement Facility. In room with beds inside the house
Metal Gear Solid Main Theme (The Document Remix)
Act 5, Under hatch to the left at the beginning of area
MGS 4 Love Theme / Action (cause soldiers held by Snake to weep like a little girl)
A random gift from a militia or rebel soldier if Snake gives them a healing item
On Alert
Act 3, Midtown N Sector
One Night in Neo Kobe City (Causes soldiers held by Snake to laugh)
Act 3, Midtown, hold-up PMC.
Opening - Old L.A. 2040 (increase Snake's accuracy)
You need to unlock 5 dolls before you can adquire the solar gun. Defeat the Frog Soldiers, Laughing Octopus, Raging Raven, Crying Wolf and Screaming Matis with Non-Lethal weapons. (During their beast form, not beauty). After defeating them grab the doll before killing their beauty form. Except on the frogs because they don't have a beauty form.
Unlockable
How to Unlock
Crying Wolf Doll/Statue
In a side of a bulding just where you start after killing her beast form
Complete a single-player session without killing anyone (including bosses). You can do this on any difficulty
Desert Eagle, Long Barrel
Earn the Fox emblem on a single-player session
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
Mantis and Sorrow Dolls
Beat Screaming Mantis
MGL-140 Grenade Launcer
Beat Raging Raven
Mk. 23 Handgun
Found in the first area of Act 4
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
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
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
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