Command & Conquer 3: Tiberium Wars Cheats - Xbox 360

Get free NOD shadow squads
Press the following buttons while in the pause menu as NOD to get free NOD shadow squads:

[Left], [Right], [Up], [Up], [Up], [Down], [RB], [LB], [LB], [B]

Achievements
Complete each achievement to get the alloted gamerscore:

Dr. Moebius Award (20) - Gather 100000 tiberium in MP games
GAME OVER! (100) - Scrin Campaign Finished with Gold medal and Bonus Ribbon
GDI Bronze (20) - GDI Campaign Finished with Bronze medal and Bonus Ribbon
GDI Campaign (80) - Complete the GDI campaign
GDI Silver (25) - GDI Campaign Finished with Silver medal and Bonus Ribbon
Losing Face (0) - Lose to someone Ranked 20 places below you in a MP Ranked Game
No life (100) - Play MP for 100 hours
Nod Bronze (20) - Nod Campaign Finished with Bronze medal and Bonus Ribbon
Nod Campaign (80) - Complete the Nod campaign
Nod Silver (25) - Nod Campaign Finished with Silver medal and Bonus Ribbon
Nod Unleashed (5) - Completing the GDI TOW: Washington D.C.
Rookie No More (20) - Complete Boot Camp Mission
Scrin Bronze (20) - Scrin Campaign Finished with Bronze medal and Bonus Ribbon
Scrin Silver (25) - Scrin Campaign Finished with Silver medal and Bonus Ribbon
Secret Achievement (20) - Continue playing to unlock this secret achievement
Secret Achievement (20) - Continue playing to unlock this secret achievement
Simon Says you LOSE (0) - Negative Achievement: Lose a single player game 3 times in a row
Something to Write Home About (220) - Complete all of the single player campaigns
The Golding Rule (0) - Negative Achievement: Lose 5 MP games in a row
The McNeil Legacy (100) - GDI Campaign Finished with Gold medal and Bonus Ribbon
You Can't Kill the Messiah (100) - Nod Campaign Finished with Gold medal and Bonus Ribbon

Unlock Campaigns
Nod campaign - Finish the GDI mission Washington DC in ACT 1
Scrin campaign - Finish the GDI and Nod campaign