The Episode 3: Fractured Mask Add-on for Batman: The Enemy Within - The Telltale Series has 6 achievements worth 200 gamerscore.
Complete Chapter 6 of Episode 3
Complete Chapter 5 of Episode 3
Complete Chapter 4 of Episode 3
Complete Chapter 3 of Episode 3
Complete Chapter 2 of Episode 3
Complete Chapter 1 of Episode 3