Platinum and Gold Unlockable Rewards in 007 Agent Under Fire:
To unlock rewards just complete specific method(Platinum rewards require you to collect all the 007 Icons)

Golden Gun - Clear level 1 with 50,000 Gold
MP Map - Rocket Manor - Clear level 1 with 50,000 Platinum
Golden CH-6 - Clear level 2 with 50,000 Gold
MP Game Mode - Golden Gun - Clear level 2 with 50,000 Platinum
Unlimited Missiles - Clear level 3 with 70,000 Gold
MP Model - Stealth Bond - Clear level 3 with 70,000 Platinum
Golden Accuracy - Clear level 4 with 70,000 Gold
MP Powerup - Gravity Boots - Clear level 4 with 70,000 Platinum
Golden Clip - Clear level 5 with 90,000 Gold
MP Model - Guard - Clear level 5 with 90,000 Platinum
Gold Grenades - Clear level 6 with 90,000 Gold
MP Weapon - Viper - Clear level 6 with 90,000 Platinum
Lotus Esprit - Clear level 7 with 100,000 Gold
MP Model - Alpine Guard - Clear level 7 with 100,000 Platinum
Rapid Fire - Clear level 8 with 100,000 Gold
MP Weapon - Calypso - Clear level 8 with 100,000 Platinum
Golden Armor - Clear level 9 with 110,000 Gold
MP Modifier - Full Arsenal - Clear level 9 with 110,000 Platinum
Golden Bullets - Clear level 10 with 120,000 Gold
MP Model - Cyclops Oil Guard - Clear level 10 with 120,000 Platinum
Regenerative Armor - Clear level 11 with 130,000 Gold
MP Model - Poseidon Guard - Clear level 11 with 130,000 Platinum
Unlimited Ammo - Clear level 12 with 130,000 Gold
MP Model - Carrier Guard - Clear level 12 with 130,000 Platinum

Secret Video in 007 Agent Under Fire:
You must first beat Evil Summit (level 12) and get at least a Bronze Medal in every mission.

Points for no trouble:
In the ''evil summit'' level (level 12, last one) climb up the tower you have to use the Q remote on after killing the bad guys. Keep using the Q remote (about 100 times will do) and you will keep getting bond moves, and 2,000 points for every time you do it. You can also get a ''perfect'' on this level (I think it is 300,000 points) by doing this.

Points for nothing:
In ''Cold Reception''(Level 5) you are able to acquire unlimited points. After the vent, you will see a guy standing below you, facing away, and a remote-accessible control to the left. Using the Q-remote will get you a bond move. After the melee in the next room, unlock the door at the top with your Q-remote, another bond move. Then go back to where you first used your Q-remote and use it again, earning another bond move. Then go to the door at the top and do it again, another bond move. Repeat this proccess enough and you will get a perfect (300,000 points).