Here is the full list of all 35 The Wolf Among Us achievements. It takes around 8-10 hours to unlock all of the achievements on Windows.
Completed Episode 5: "Cry Wolf"
Unlocked all Book of Fables entries in Episode 5.
Completed Chapter 5 of Episode 5.
Completed Chapter 4 of Episode 5.
Completed Chapter 3 of Episode 5.
Completed Chapter 2 of Episode 5.
Completed Chapter 1 of Episode 5.
Completed Episode 4: "In Sheep's Clothing"
Completed Chapter 5 of Episode 4.
Completed Chapter 4 of Episode 4.
Completed Chapter 3 of Episode 4.
Completed Chapter 2 of Episode 4.
Completed Chapter 1 of Episode 4.
Completed Episode 3: "A Crooked Mile"
Completed Chapter 5 of Episode 3.
Completed Chapter 4 of Episode 3.
Completed Chapter 3 of Episode 3.
Completed Chapter 2 of Episode 3.
Completed Chapter 1 of Episode 3.
Completed Episode 2: "Smoke and Mirrors"
Completed Chapter 5 of Episode 2.
Completed Chapter 4 of Episode 2.
Completed Chapter 3 of Episode 2.
Completed Chapter 2 of Episode 2.
Completed Chapter 1 of Episode 2.
Completed Episode 1: "Faith"
Completed Chapter 5 of Episode 1.
Completed Chapter 4 of Episode 1.
Completed Chapter 3 of Episode 1.
Completed Chapter 2 of Episode 1.
Completed Chapter 1 of Episode 1.
Unlocked all Book of Fables entries in Episode 1.
Unlocked all Book of Fables entries in Episode 2.
Unlocked all Book of Fables entries in Episode 3.
Unlocked all Book of Fables entries in Episode 4.