Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
David and Ogreliath	Destroy or disable an Ogre using only Infantry or MBS units.	100
Demolition Ogre	Destroy an enemy Ogre in Overrun.	100
G.E.V General	Win all of the G.E.V map scenarios at least once.	100
Hail the Combine!	Win five scenarios as North American Combine.	100
Nightfall	Complete the Nightfall campaign.	100
Ogre General	Win all of the original Ogre scenarios at least once.	100
One Ping Only	Deploy reinforcements when down to one remaining unit.	100
Ready Fire	Have 10+ units (armour or infantry) fire on the same turn.	100
Steel Rain	Destroy three units with spillover fire.	100
Victory for the Federation!	Win five scenarios as Pan-European Federation.	100