Unlock Explosive Scenery:
Enter the code BOOM

Get Teamwork Koth Mode:
Enter the code TEAMWORK

Goldeneye Strike:
Enter the code Orbit

Assassination Mode:
Enter the code SCOPE

Use Shelby Cobra on the Vanquished Level:
On the Vanquished level pause the game and HOLD L and press Right, Right, Left, left, Up

Pick level:
Enter the code PASSPORT

Get Demolition Mode:
Enter the code TNT

Get protect Mode:
Enter the code GUARDIAN

Get Uplink Mode:
Enter the code TRANSMIT