Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
Caught Unawares	Knock out an investigating enemy while invisible	25
Did the Reading	Collect all the Lore Items in the game	50
Double Kill	Kill two enemies with one shotgun blast	25
Expert	Complete a level without using any abilities	25
Future Tech	Collect all the Upgrade Kits in the game	50
Ghost	Complete a level without alerting any enemies	25
Invincible	Complete a level without taking damage	25
Last Stop	Beat the game	100
Merciful	Complete a level without killing anybody	25
No Witnesses	Complete the game having killed everyone	80
Ruthless	Complete a level having killed everyone	25
Saintly	Complete the game without killing anybody	80
Triple Crown	Hit the same enemy with a smoke grenade, a shock bolt, and your baton	25