PLAY ANY LEVEL
Beat the game under the Easy or greater difficulty setting.
The special stage select allows any level to be played with new mission
By equipping rations as opposed to simply using them, they will
automatically be used by Snake when needed. This is especially useful in Boss
battles, or when there is a chance of being hit by a powerful attack.
Beat the stages in the special stage select to
get No. 4 to reveal pieces of the plot.
Beat the game, and then start a new game.
Dial up 140.07 on the Codec to hear some in-game entertainment.
UNLOCK THE SOUND MENU
Beat the VR training missions with a perfect 100 percent ranking.
The sound menu will be on the options screen and
allows all game sounds and music to be played.