Warner Bros. has released the full trailer for the final piece of Batman: Arkham City DLC, Harley Quinn’s Revenge.

The DLC will feature more than two hours of new content and is set to release May 29. The official description:

“The Harley Quinn’s Revenge mission sends players back into Arkham City to face their final challenge as they interchange between playing as both Batman and Robin.”

“Gamers must utilize each of the characters’ unique combat and investigative skills to uncover Harley’s vengeful plan and shut the gates on the urban mega-prison forever. In addition to experiencing a new storyline, fans can explore new environments and face-off against Harley’s all new gang of thugs.”