The site lists 10 new Harley Quinn DLC trophies for last year's Caped Crusader entry that appear to be for story-driven content, as opposed to simply additional challenge rooms. Some of the challenges task players with defusing bombs, finding a way into a secret base, and zip-kicking thugs.
Additionally, one of the trophies unlocks after players use five different quickfire gadgets as Robin, pointing to the Boy Wonder being a playable character in the content.
Previously released Arkham City add-on content includes the Catwoman Bundle Pack, the Robin Bundle Pack, the Nightwing Bundle Pack, and the Challenge Map Pack.
Batman: Arkham City was developed by Rocksteady Studios and shipped for the Xbox 360 and PlayStation 3 on October 18, with a PC version following on November 22. The game received a strong critical reception and shipped 6 million units.