Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
Admiral	Complete all levels with three stars.	100
Builder	Build 50 towers.	50
Cannoneer	Kill 1000 enemies.	50
Capitalist	Sell 500 towers.	100
Commander-in-Chief	Kill 50 000 enemies.	100
Engineer	Build 1000 towers.	100
Fortune's favorite	Finish the level with one hp.	100
Furious	Launch 100 waves on one map manually.	100
Head Hunter	Get 100 000 coins.	100
Heavy artillery	Fully upgrade 200 towers.	100
Secret weapon	Kill 500 enemies with the secret weapon.	50
Seller	Sell 50 towers.	50