Unlimited health
Hold L1 + R2 and press Up, Down, Circle(2), Down(3), Left, Circle at the main menu. Begin the game, and once in a level, press Start. Then, hold Down + L2 + R1 and press Circle(2), R2, Circle, L1, Square(2), Circle. If done correctly, you will unlimited health in all levels.

Unlimited rocket launchers
Hold L1 + L2 + R1 + R2 and press Up, Down, Left, Right, Circle(2), Square at the main menu. Begin the game, and once in a level, press Start. Then, press Circle, Square, R1, Square, Up, Circle, Down, Left. If done correctly, you will have unlimited rocket launchers in all levels.

All weapons
Pause game play, then hold L1 + L2 and press X(3),Up, Down, Circle, Right, Up, Down, Circle.

Invincibility
To get Gold Bond, shoot a man and keep shooting in the same spot until your ammunition runs out. Then, shoot his gun once with your PP7 and pick it up. You will see Q and Monnypenny walking around. Shoot them to get Gold Bond.