Batman: Arkham City - Harley Quinn's Revenge DLC trailer

Warner Bros. has released a new trailer to show fans what they can expect from the newest DLC (downloadable content) pack for Batman: Arkham City. This newest pack is called Harley Quinn's Revenge and will be released on Xbox Live and the Playstation Network for $9.99 on May 29th.

I really love the maniacal nature of Harley Quinn! 

Source: GameInformer.

Video Source: IGN