IGN has revealed this new teaser for "Harley Quinn's Revenge," the new DLC that will come with "Batman: Arkham City Game of the Year Edition" on May 29th and also as a standalone download.

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.