James Bond 007: Nightfire Cheats (GameCube)

On the Enemies Vanquished level during racing
  pause the game and HOLD L and press B, X, Y, B, Y

Put in the code MAGAZINE

On any level during racing pause the game and HOLD L
  and press B, Y, X, B, B, B

On any level during racing pause the game and HOLD L
  and press B, Y, X, B, Y, X

Put in the code TARGET

Go to the codename option, then go to the secrets screen to enter one of the following
codes:

  All characters: PARTY 
  Baron Samedi: VOODOO 
  Bond Tuxedo: BLACKTIE 
  Christmas Jones: NUCLEAR 
  Drake: NUMBER 1 
  Elektra King: SLICK 
  Goldfinger: MIDAS 
  Jaws: DENTAL 
  Max Zorin: BLIMP 
  Mayday: BADGIRL 
  Nick Nack: BITESIZE 
  Oddjob: BOWLER 
  Pussy Galore: CIRCUS 
  Renard:  HEADCASE 
  Scaramanga: ASSASSIN 
  Spacesuit Bond: ZERO G 
  Wai Lin:  MARTIAL 
  Xenia Onatopp: JANUS

Enter TARGET as a code.

Enter ORBIT as a code.

Put in the code BLIMP

Put in the code PASSPORT

When you are playing level 12 on 1 player get a gold medal with all
  007 icons.

  

Go to the codename option, then go to the secrets screen to enter one of the following
codes:

  All gadget upgrades: Q LAB 
  Better Rifle Scope: SCOPE 
  Golden P2K: AU P2K 
  Golden PP7: AU PP7 
  Grapple upgrade: LIFTOFF 
  Laser upgrade: PHOTON 
  More Sniper Ammo: MAGAZINE 
  P2K upgrade: P2000 
  Stun Gun upgrade: ZAP 
  Tranquilizer upgrade: SLEEPY 
  Vehicle missile upgrade: LAUNCH

Put in the code GUARDIAN

Enter BOOM as a code.

On any level during racing pause the game and HOLD L
  and press X, X, X, X

Choose multi-player mode and for weapons select Phoenix weapons. You
  will start with a pistol. Find another and you can use two pistols.
  Note: You must also be a Phoenix character.

  

Put in the code Party

Enter GUARDIAN as a code.

Put in the code TRACTION

On any level during racing pause the game and HOLD L
  and press B, Y, Y, B, Y, X

Put in the code MARTIAL

On the Enemies Vanquished level during racing  pause the game and HOLD L and press X, X,
B, B, Y

Put in the code PARADISE

Put in the code MIDAS

Put in the code BOOM

Put in the code ASSASSIN

Enter TNT as a code.

Pause the game, then enter any of the following cheats (NOTE: all of these cheats work
only in vehicle mode, and some of them work only on certain vehicle mode levels): 

  2X Armor: Hold down L and press X, Y, B, 2(X). Then release L. 
  3X Armor: Hold down L and press X, Y, B, 3(X). Then release L. 
  4X Armor: Hold down L and press X, Y, B, 4(X). Then release L. 
  Apline Race: Hold down L and press 2(X), 2(B), Y. Then release L. 
  Berserk mode: Hold down L and press B, 2(Y), B, Y, X. Then release L.
  Cobra: Hold down L and press 2(right), 2(left), up. Then release L. 
  Frantic mode: Hold down L and press B, Y, X, B, Y, X. Then release L. 
  Racing Trails: Hold down L and press B, 2(X), B. Then release L. 
  Super bullets: Hold down L and press 4(X). Then release L. 
  SUV: Hold down L and press B, X, Y, B, Y. Then release L.

Enter GAMEROOM as a code.

Put in the code Q LAB  (Must have
  the space)

Put in the code MAGAZINE

Put in the code VACUUM

Put in the code TEAMWORK

On the Vanquished level pause the game and HOLD
  L and press Right, Right, Left, left, Up

On the Enemies Vanquished level during racing
  pause the game and HOLD L and press Right, Right, Left, Left, Up

Go to the codename option, then go to the secrets screen to enter one of the following
codes:

  Level select: PASSPORT 
  Alpine Escape: POWDER 
  Chain Reaction: MELTDOWN 
  Countdown: BLASTOFF 
  Deep Descent: AQUA 
  Double Cross: BONSAI 
  Enemies Vanquished: TRACTION 
  Equinox: VACUUM 
  Island Infiltration: PARADISE 
  Night Shift: HIGHRISE 
  Phoenix Fire: FLAME

Put in the code DENTAL

Put in the code VOODOO

Put in the code FLAME

Put in the code CIRCUS

Put in the code TRANSMIT

Put in the code MELTDOWN

On any level during racing pause the game and HOLD L
  and press B, Y, X, B, B

On any level during racing pause the game and HOLD L
  and press B, X, X, B

Enter TEAMWORK as a code.

Put in the code BLACKTIE