Debug mode
 
 When the Core Design copyright screen appears, press Up, Down, Left,
 Right, Down(2), Right(2), Square in the NTSC version of the game. For
 the PAL version of the game, press Triangle instead of Square. If you
 entered the code correctly, a debug menu will appear. Highlight the
 credits option in the debug menu and press Left(8), Triangle for an
 added bonus. 
 
 Invincibility
 
 Start a game and then press Start + Select to quit. Then at the main
 title screen, press Up(3), Down(3), Right(2), Triangle. If you
 entered the code correctly, you will hear the sound of a chime. While
 playing the game, the energy bar will still go down, but will
 eventually rise again. 
 
 Bonus mission
 
 Enter the briefing area and go to the locker on the left side of the
 screen. Then, open the locker and enter "4L2CZCQKDAABACQDB" at the
 password screen. Now a mission to destroy the Crimson Blade training
 camp in the Masirah Mountains will begin.
 
  Game Shark Codez:
 
                  
  Invincibility              
  80087C1E 0300
                  
  Infinite SAMS              
  800855AE 0004
                  
  Infinite Cash              
  800855C0 FFFF
                  
  Infinite Air Support       
  800855B4 0004
                  
  Upgrade Target Comp        
  800855BC 0004
                  
  Upgrade Engine             
  800855B6 0004
                  
  Upgrade Track              
  800855B8 0004
                  
  Upgrade Coolant            
  800855BE 0004
                  
  Upgrade Reloader           
  800855BA 0004
                  
  Upgrade Armor              
  800855AC 0004
                  
  Zero Enemy Targets to Kill 
  800887D4 0000