Directions:

PASSPORT - Level Select
TRANSMIT - Uplink Mode
GUARDIAN - Protection Mode
TNT - Demolition Mode
PHOTON - Faster Laser
SLEEPY - Stronger Tranquilizers
Q LAB - All gadget updates
MAGAZINE - Bigger Sniper rifle clips
TARGET - Get a Platinum medal
BLASTOFF - Unlock Countdown Level
MELTDOWN - Unlock Sniper Level
VACUUM - Unlock the Equinox Level
FLAME - Unlock the Phoenix Fire Level
AQUA - Unlock the Deep Descent Level
BOOM - Explosive Scenery in MP
TEAMWORK - Team King of the Hill in MP
SCOPE - Assassination Mode in MP
ORBIT - Goldeneye Strike in MP
PARTY - Unlock all MP characters
BOWLER - Unlock Oddjob in MP
NUCLEAR - Unlock Christmas Jones in MP
MIDAS - Unlock Goldfinger in MP
CIRCUS - Unlock Miss Galore in MP
ASSASSIN - Unlock Scaramanga in MP
DENTAL - Unlock Jaws in MP
BLACKTIE - Unlock Tuxedo in MP
VOODOO - Unlock Baron Samedi in MP
JANUS - Unlock Xenia in MP
DENTAL - Unlock Jaws in MP
BLIMP - Unlock Max Zorin in MP
NUMBER 1 - Unlock Drake in MP

Drive Shelby Cobra:
On the Enemies Vanquished level, press Start to pause the game. Then hold L1 and press Right, Right, Left, Left, Up and release L1. You can now drive the Shelby Cobra through the Alps and beat the enemy car.