Metal Gear Solid 2: Sons Of Liberty
Alternate title screen:
Successfully complete the game. The title screen will turn blue.
To see the alternate title screen without completing the game,
load your game file but do not begin game play. Instead, return
to the title screen and it will alternate from Raiden's face to
Solid Snake's face.
Extreme difficulty setting:
Successfully complete the game to unlock the extreme
Increase grip strength:
Press L2 + R2 one hundred times when hanging on a ledge
to do pull-ups.
Quickly press Up(2), Down(2), Left, Right, Left, Right, X,
Circle at the clear code screen. You will hear Snake yell,
but the code (the classic Konami code) does nothing.