We offer you the trailer of Harley Quinn's Revenge , the new DLC for Batman: Arkham City which disembark on Marketplace on 30 may at a price of 800 MP. The mission Harley Quinn's Revenge brings players to Arkham City to face the final showdown using both Batman Robin. To fight and discover the shady Harley plans and close the gates of the mega prison forever. In addition to a new storyline fans can explore new environments and tackle new minions of Harley.