Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
Escaped	Completed the Prison.	100
Fallen Tripod	Defeated the Tripod.	100
Just Kidding	Here's the rest!	129
Nathan's Kingdom	Completed Nathan's Kingdom.	50
People used to live here?	Completed the Apartments.	100
Plane Wreckage	Completed Plane Wreckage.	50
Red Weed Everywhere	Completed Castleton.	100
So it begins...	Complete the Tutorial.	20
The Beautiful Game	Completed the Stadium.	100
Tooled Up	Unlocked All Throwables.	50
Trollin'	Completed the Game for one Gamerscore.	1
Vitality	Fully upgraded Jack.	50
Zapped	Took out three enemies at the same time using throwables.	150