The Episode 2: Shaking the Hive Add-on for Blues & Bullets has 7 achievements worth 200 gamerscore.
Interact with all the clues and items of interest in episode 2
Complete the second episode
Complete the fifth chapter of episode 2
Complete the fourth chapter of episode 2
Complete the third chapter of episode 2
Complete the second chapter of episode 2
Complete the first chapter of episode 2