The -20dBFS pink noise signals are available from the pop-up generator in these modules. In addition, once the Surround Signal Generator is unlocked, the surround test signals become available in a number of other test functions:
Successfully complete story mode in single player mode.
Successfully complete the Monaco mini-game in story mode. Successfully complete the L.A./Cousin Eddy mini-game in story mode. Successfully complete the Russia mini-game in story mode. Note: Do this in story mode after using up all weapons.
A message will confirm correct code entry. Press Up, X, Up, X, L + R during game play. When this touches an enemy, it will freeze them for a few seconds. Press Right, Left, Up, Down during game play to create a freeze missile. If done correctly, a blinking red mine will appear underneath your car. Press Right, Left, Down, Up during game play. Note: This uses up about one quarter of your energy. If done correctly, your car will glow green for a few seconds. Press Right(2), Down(2) during game play. Press Triangle, X, Square, Circle, L + R during game play. Press X, Triangle, X, Triangle, L + R during game play. Press Triangle(2), Down(2), L + R during game play. Press Right, Left, Down, Up, L + R during game play. Press X(2), Up(2), L + R during game play. Therefore, you do not need to re enter them when in story mode. Codes will not be disabled until you do re enter them. They have no effect in multi-player or online modes. The following codes are entered during game play in single player mode. Name of the file: Twisted Metal : Head-On - Author: ANO Twisted Metal : Head-On | Trainers City - Print Cheat - Twisted Metal : Head-On - Trainers City - Cheats & Soluces.