Unlock Xbox Live Gamerscore points, by completing the following Achievements.

Achievement	How to unlock
A Burning Thing ( 20 points )	Kill an enemy with a Napalm Grenade.
Ark King ( 60 points )	Reach Level 24.
Mutual Support ( 30 points )	Have a Field Regen Unit buff more than 3 players simultaneously.
Pyromancer ( 20 points )	Kill an enemy with a Pyro Mine.
Remote Control ( 20 points )	Kill an enemy with a UAV.
Science Maven ( 50 points )	Win Labs as both factions in Campaign Mode.
Towering Achievement ( 50 points )	Win Founders' Tower as both factions in Campaign Mode.