James Bond 007: Everything or Nothing Cheats

There are several places in game where mission changes based on your
behavior, in the level "The Ruined Tower" when you snipe the rocket
launcher guard on the roof from inside the tower, several guards will
apear behind you the second time you try to do this. STAY ALERT!

During the mission you will reach a Spiderbomb path on the second mine level, near the wall up to the third level. If you send the Spiderbomb up this path, it will open a door to a weapons cache and give you the chance to take out several guards quickly. If you kill them, the next time you attempt the mission, there will be three guards in position by the spider hole.

By the way, these won't work unless you unlock them by getting platinum on 00 Agent difficulty.
Unlocked by getting 3 "Platinum" awards. Pause game play, then press X, A(2), B, Y.

at the main menu screen hit A 3 times then hit B and then hit start. This is for Gamecube

in the Mardi Gras Mayhem level, before you "meet" Mya. Go to the suberban area of the coarse, you know, near the blue flashy thingy. Anyway, when you first enter the suberban area on your left thier should be a fire hidrent and a mail box. Stop your car inbetween them. Get out your electo magnet, and when a car stops infront of you FIRE. It will send debree soring into the car blowing it up and sending it flying into the air just to crash in an unexpected spot. IT LOOKS REALLY COOL. SHOW YOUR FRIIENDS. THEY WILL THINK ITS COOL TO. DON'T SHOW YOUR PARENTS. THEY WONT THINK ITS COOL.

At the beginning of the "Train Chase" mission, instead of taking a left to Bond's Porsche, turn right into a small room. Inside, you'll find a dirtbike and a slightly different path through the level.