Arkham City looks like it will be able to expand its horizons once again with some new DLC that has been leaked. Thanks to PS3Trophies, they have listed a bunch of new trophies under the category of Harley Quinn and under that heading TBA.

The trophies seem to reveal awards for a number of different story-based missions. Trophy details also suggest that Robin, who was a pre-order bonus and downloadable character for the main game, is playable in the new expansion.

This will be the fourth major expansion that has been added on for the Arkham City game, which would be following Catwoman that came free with the game and various others such as challenge mode packs and character skins.

There has been no official word of the new expansion and Warner Brothers declined to comment when asked about it.

The full list of Harley Quinn DLC Trophies lies below.

Lost Property [Bronze] – No crimefighter should be without this
Breaking and Entering [Bronze] – Find a way into the secret base
How’s It Hanging? [Silver] – Clean up the Dry Docks
The Last Laugh [Silver] – The joke’s on who?
Frequent Flyer [Bronze] – Zip Kick 3 different thugs
Battering Ram [Bronze] – Shield Bash 5 different thugs
Snap To It [Bronze] – Snap Flash an unarmed thug, an armed thug, an environmental object and a Titan
Bomb Squad [Bronze] – Defuse all bombs in 3 minutes or less
A Few New Tricks [Bronze] – Use 5 different Quickfire gadgets in one fight as Robin in Harley Quinn’s Revenge
Party’s Over [Silver] – Destroy all Harley Balloons