Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock
Architect III (100 points)	Upgrade command bunker to rank 8.
Aviator II (50 points)	Promote the bomber in the command bunker.
Bandit II (100 points)	Loot 2500000 supplies from the enemy.
Cannon Fodder II (50 points)	Lose 500 riflemen in battle.
Greenhorn III (25 points)	Complete the tutorial.
Home Guard II (50 points)	Garrison 500 army units.
No Man's Land II (50 points)	Remove 8 obstacles from your islands.
Skipper II (25 points)	Promote the warship in the command bunker.
Strategist III (50 points)	Attain 45 stars in the campaign.
Tag Collector III (100 points)	Acquire 2500 dog tags from the enemy.
Terra Firma II (100 points)	Expand your base to 4 islands.
TrailBlazer II (100 points)	Attain 10 consecutive victories against the enemy.
Treasurer III (100 points)	Upgrade a supply depot to rank 10.
Warmonger II (100 points)	Attain 100 offensive victories against the enemy.