Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
Alpha Centauri	Reach to 30K points in Classic Mode.	70
Andromeda	Reach 35K in Bullet Mode.	70
Canis Major	Reach 15K in Time Rush.	70
Cetus	Reach 35K in Time Rush.	70
Cruise Detroyer	Kill one battlecruiser.	70
Eridanus	Reach 5K in Hardcore Mode.	70
Leo	Reach to 120K points in Classic Mode.	70
Ophiuchus	Reach to 60K points in Classic Mode.	70
Piscis Austrinus	Complete Wold 1.	80
Sagittarius	Reach 15K in Bullet Mode.	70
The whole crew was lost	Die once.	70
Ursa Major	Reach 15K in Time Attack.	70
Virgo	Complete Wold 2.	80
With honors	Get a gold rating on any challenge.	70