Metal Gear Solid Cheats

Complete all of the VR missions in both practice and time attack mode to access sound mode.

When you get caught by a soldier inside a building or car, get out of the place and go back in. Keep on doing this and the enemies dissapear, causing your alert mode and evasion mode status to clear. You can also do this by entering and exiting a door.

This opens up after you beat the game the first time. Here you can challenge three new missions for each level of the game and you can find out more about the game's story.