The Episode 2: Smoke and Mirrors Add-on for The Wolf Among Us (Xbox 360) has 7 achievements worth 100 gamerscore.
Complete Chapter 1 of Episode 2.
Complete Chapter 2 of Episode 2.
Complete Chapter 3 of Episode 2.
Complete Chapter 4 of Episode 2.
Complete Chapter 5 of Episode 2.
Complete Episode 2: "Smoke and Mirrors"
Unlock all Book of Fables entries in Episode 2.