Splinter Cell: Chaos Theory cheats and cheat codes for XBox

Keypad codes:

Mission 3: Bank
Keypad before president's office: 3490
Keypad to bank's back door: 3901
Keypad to left security booth on 1st floor: 3624
Keypad to main security room: 2306
Keypad to right security booth on 1st floor: 3624
Keypad to safe in president's office: unknown
Keypad to treasurer's office: 8645

Mission 4: Penthouse
Keypad To Dvorak Room: 0280 

Mission 5: Displace
Keypad to central server room: Code 2109
Keypad to CEO's meeting room: 2346
Keypad to CEO's office: 2609
Keypad to door between meeting room and lobby on 1st floor: 8136
Keypad to door between meeting room and lobby on 2nd floor: 8136
Keypad to fire escape: 3485
Keypad to R&D server room: 9205 

Mission 7: Battery
Keypad to shipping area: 1879
Keypad to elevator: unknown

Mission 9: Bathhouse
Keypad to owner's office: 3650 
Mission 10: Kokubo Sosho


Unlock all co-op missions
Type the following cheat code as your profile name: "COOPA22COOL" 
Now you can access to all co-op missions.

Unlock elite Mode
Finsih the Story Mode to unlock Elite Mode, where you only have a 
knife to use.

Unlock movie trailer:
Finish the Lighthouse mission in single mode

Create an account named COOPA22COOL and all missions will be unlocked
Submitted by: Ho3a3nG