Metal Gear Solid 2: Substance Cheats

To knock out an enemy's radio easily, when you hold them up shoot it (on the belt to the right of their back). Also shoot an enemy's radio when they are knocked out to prevent them from calling for help if they wake up.

In-game reset:
Hold L + R and press Start + Select during game play.
Sunglasses:
After completing the game twice, Snake and Raiden will be wearing sunglasses.
European Extreme difficulty:
Successfully complete the game under the normal difficulty setting.
Boss survival mode:
Successfully complete Sons Of Liberty under any difficulty setting.
Photograph mode:
Successfully complete bomb disposal mode, hold up mode (alternative missions), and eliminate mode to unlock photograph mode in the VR Missions.
Casting theater option:
Successfully complete Sons Of Liberty under any difficulty setting.
Ninja Raiden:
Successfully complete 50% of the VR missions as Raiden to unlock Ninja Raiden in the VR Missions.
Pliskin:
Successfully complete 50% of the VR missions as Snake.
Raiden X:
Successfully complete 100% of the VR missions as Raiden and Ninja Raiden.
Tuxedo Snake:
Successfully complete 100% of the VR missions as Pliskin.
Metal Gear Solid 1 Snake:
Successfully complete 100% of the VR missions as Snake, Pliskin, Tuxedo Snake, Raiden, Ninja Raiden, and Raiden X.

When in first person mode both in VR missions and in the game itself. Press both the Left and Right trigger buttons and you will step on your tiptoes allowing a better view over tall objects.

(I think this works under any difficulty setting) After you meet Stillman and he tells you how to freeze the bombs, go and freeze the bomb in the woman's restroom, then Stillman will automatically call you (you can skip the transmission if you want) then call Pliskin (Snake-141.80) NOTE: DO NOT skip the transmission! This code will not work if you do! Then go outside to the CD Connecting bridge. You'll notice that the guard will be knocked out and there will be a man walking across the bridge in a cardboard box dressed like the soldiers sent in to take out DEAD CELL (it's snake!) NOTE: Also in the skit were Raiden meets Olga she'll Snake sneaking around inside a cardboard box.