Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
2 Fast 2 Fiona (30 points)	Complete Chapter 5 of Episode 1.
Blood Money (30 points)	Complete Chapter 6 of Episode 1.
Devil on Your Shoulder (50 points)	Complete Episode 1.
My Turn To Speak (30 points)	Complete Chapter 2 of Episode 1.
Not Alone in the Dark (20 points)	Complete Chapter 4 of Episode 1.
Partners In Crime (20 points)	Complete Chapter 3 of Episode 1.
Welcome to Pandora, Kiddos (20 points)	Complete Chapter 1 of Episode 1.