Get Any Level- At the main menu press Up, Down, Down, Right, Right, Right, Left, Left, Left, Left, C-Down + Start.
All Multiplayer Characters- At the main menu press Up, Down, Down, Right, Right, Right, Left, Left, Left, Left, C-UP+ Start.
Unlimited Pistol Ammo- To get unlimited pistol ammo press "b" when you are out of bullets on the story mode on easy, normal, or hard setting.
Get Sudden Death, Trial and Max Power- Finish the game with the hard difficulty setting.
Use C-4 In Multiplayer Level factory-1- Press Down to use C-4 on this level.
Unlimited Health- At the main menu press Down, Up, Up, Down, Down, Down, C-Left, C-Up, C-Up, and start.