The A Matter of Family Add-on for Batman: Arkham Knight has 8 achievements worth 150 gamerscore.
Destroy all Teeth, Balloons and Jack-In-The-Boxes.
Defeat 15 enemies using any type of hacking.
Uncover the secret history of the park.
Rescue your father.
Free the hostages at the Ferris Wheel.
Free the hostages at the Ghost Ship.
Defeat 4 enemies within the duration of a single scare effect.
Free the hostages at the Merry-go-round.