Load up on over 30 secrets and bonus goodies for Metal Gear Solid 4: Guns of the Patriots!
Secret weapons / items
Bandanna: Complete a single-player session without killing anyone (including bosses). You can do this on any difficulty.
Long Barreled Desert Eagle: 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.
Patriot Future Assault Weapon: Earn the Big Boss emblem on a single-player session.
Race (Ricochet):Gun Clear the single-player game once.
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.
World War I Pistol: Earn the Hound emblem on a single-player session.
Altair: Obtain the Assassin emblem.
Civilian Disguise: Start Eastern Europe level.
Middle East Militia Disguise: Middle East in the Militia Safe House.
South American Rebel Disguise: South America (Cove Valley Village).
Suit: Clear the game once.