Unlocked by getting 17 "Platinum" awards.
Using a combination of assault, Shotgun, and grenades works best. Warning: Only use the (sticky) grenades at a far distance, especially for the little ones.

Successfully complete the indicated level to unlock the corresponding Bond gadget.

EMP Grenade: The Pontchartrain Bridge
Frag Grenade: Ground Zero
Network Tap: Diavolo's Plan
Q-Cloak: Sand Storm
Q-Spider: Sand Storm
Q-Spider Dart: Diavolo's Plan
Q-Spider Explosive: A Show of Force
Q-Spider Nano: Diavolo's Plan
Rappel: Ground Zero
RC Car: Sand Storm
Sleeper Dart: Sand Storm
Strobe Grenade: Sand Storm
Thermovision: Ground Zero

Get the following number of "Gold" awards in single player mode to unlock the corresponding bonus.

Production Stills 1: 1 "Gold" award
Tank Weapon Upgrade: 10 "Gold" awards
Underworld: 11 "Gold" awards
Cayenne Weapon Upgrade: 12 "Gold" awards
Production Stills 8: 13 "Gold" awards
Mya: 14 "Gold" awards
Vanquish Weapon Upgrade: 15 "Gold" awards
Production Stills 9: 16 "Gold" awards
Miss Nagai: 17 "Gold" awards
Production Stills 10: 18 "Gold" awards
Production Stills 11: 19 "Gold" awards
Production Stills 2: 2 "Gold" awards
Katya: 20 "Gold" awards
Triumph Weapon Upgrade: 21 "Gold" awards
Production Stills 12: 22 "Gold" awards
Production Stills 13: 23 "Gold" awards
Nanotank Weapon Upgrade: 24 "Gold" awards
Production Stills 14: 25 "Gold" awards
Gallery: 27 "Gold" awards
Production Stills 3: 3 "Gold" awards
Production Stills 4: 4 "Gold" awards
Production Stills 5: 5 "Gold" awards
Helicopter Weapon Upgrade: 6 "Gold" awards
Production Stills 6: 7 "Gold" awards
Serena: 8 "Gold" awards
Production Stills 7: 9 "Gold" awards

The following cheats have no effect until you have collected the indicated number of "Platinum" awards to unlock them. When this is done, the code will be revealed and can be used in any single player level in the game. However, codes cannot be enabled while trying to attain a "Platinum" award to unlock other codes.

Unlocked by getting 13 "Platinum" awards.

Successfully complete all single player levels to unlock the MI6 Combat Simulator and MI6 Survival Test bonuses.

Unlocked by getting 7 "Platinum" awards. Pause game play, then press B(2), A, B, Y.
Unlocked by getting 9 "Platinum" awards. Pause game play, then press B, Y(2), X, B.
Unlocked by getting 11 "Platinum" awards.
Unlocked by getting 15 "Platinum" awards.
Unlocked by getting 1 "Platinum" award. Pause game play, then press B, Y, A, B, Y.
Unlocked by getting 5 "Platinum" awards. Pause game play, then press B, X(2), A, B.
Unlocked by getting 3 "Platinum" awards. Pause game play, then press B, A(2), X, Y.
Unlocked by getting 27 "Platinum" awards.
Unlocked by getting 25 "Platinum" awards.
Unlocked by getting 23 "Platinum" awards.
Unlocked by getting 19 "Platinum" awards.

Play through the cooperative missions and acquire multiplayer points by completing the optional objectives.