Command & Conquer 3: Tiberium Wars Cheats

Get free NOD shadow squads
Press the code whilst in pause menu as NOD:

[Left], [Right], [Up], [Up], [Up], [Down], [RB], [LB], [LB], [B]: Get free NOD shadow squads

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