Complete the following achievements to unlock Xbox Live Gamerscore points.

GDI Bronze (20 points): GDI Campaign Finished with Bronze medal and Bonus Ribbon.

Nod Bronze (20 points): Nod Campaign Finished with Bronze medal and Bonus Ribbon.

Scrin Bronze (20 points): Scrin Campaign Finished with Bronze medal and Bonus Ribbon.

GDI Silver (25 points): GDI Campaign Finished with Silver medal and Bonus Ribbon.

Nod Silver (25 points): Nod Campaign Finished with Silver medal and Bonus Ribbon.

Scrin Silver (25 points): Scrin Campaign Finished with Silver medal and Bonus Ribbon.

The McNeil Legacy (100 points): GDI Campaign Finished with Gold medal and Bonus Ribbon.

You Can’t Kill the Messiah (100 points): Nod Campaign Finished with Gold medal and Bonus Ribbon.

GAME OVER! (100 points): Scrin Campaign Finished with Gold medal and Bonus Ribbon.

Something to Write Home About (220 points): Complete all of the single player campaigns.

Dr. Moebius Award (20 points): Gather 100000 tiberium in MP games.

Rookie No More (20 points): Complete Boot Camp Mission.

No life (100 points): Play MP for 100 hours.

Nod Unleashed (5 points): Completing the GDI TOW: Washington D.C.

Simon Says you LOSE (0 points): Negative Achievement: Lose a single player game 3 times in a row.

The Golding Rule (0 points): Negative Achievement: Lose 5 MP games in a row.

Mister NO it all (0 points): Negative Achievement: Skipping the Tutorial suggestion from SP.

Losing Face (0 points): Lose to someone Ranked 20 places below you in a MP Ranked Game.

GDI Campaign (80 points): Complete the GDI campaign.

Nod Campaign (80 points): Complete the Nod campaign.

Additionally, there are two secret achievements, both of which are currently unknown.