Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
Biomechanical Research - Hard	Finished 'Biomechanical Research' on Hard Difficulty.	150
Biomechanical Research	Finished 'Biomechanical Research' on Easy or Normal Difficulty.	40
Comms Array - Hard	Finished 'Comms Array' on Hard Difficulty.	60
Comms Array	Finished 'Comms Array' on Easy or Normal Difficulty.	10
Familiar Faces	Tagged a Familiar Face.	110
Nuclear Plant - Hard	Finished 'Nuclear Plant' on Hard Difficulty.	150
Nuclear Plant	Finished 'Nuclear Plant' on Easy or Normal Difficulty.	40
Prison - Hard	Finished 'Prison' on Hard Difficulty.	150
Prison	Finished 'Prison' on Easy or Normal Difficulty.	30
The Wasteland - Hard	Finished 'The Wasteland' on Hard Difficulty.	100
The Wasteland	Finished 'The Wasteland' on Easy or Normal Difficulty.	40
Underground Lab - Hard	Finished 'Underground Lab' on Hard Difficulty.	100
Underground Lab	Finished 'Underground Lab' on Easy or Normal Difficulty.	20