Though it hasn't been officially confirmed by Warner Bros. Interactive Entertainment or Rocksteady Studios yet, PS3 Trophies' new list of "Harley's Revenge" DLC trophies seems to indicate Batman: Arkham City players might have reason to resume their open-world adventures in Gotham soon -- this time, as Robin. Not only do the trophies point to using Robin's specific weapons suite, they also mention playing as the character specifically. While Robin and Nightwing gameplay is currently limited to challenge maps rather than the full Arkham City environment, this new DLC could insert the characters into a a more immersive story-based scenario. Even if open-world adventuring is wishful thinking, a few extra simpler challenges to complete as Robin wouldn't be an unwelcome addition to the game provided the DLC's (currently unknown) price is right. See what you make of the potential DLC trophies after the cut.Here's a full list of the trophies from PS3 Trophies:

Lost Property

No crimefighter should be without this

Breaking and Entering

Find a way into the secret base

How's It Hanging?

Clean up the Dry Docks

The Last Laugh

The joke's on who?

Frequent Flyer

Zip Kick 3 different thugs

Battering Ram

Shield Bash 5 different thugs

Snap To It

Snap Flash an unarmed thug, an armed thug, an environmental object and a Titan

Bomb Squad

Defuse all bombs in 3 minutes or less

A Few New Tricks

Use 5 different Quickfire gadgets in one fight as Robin in Harley Quinn's Revenge

Party's Over

Destroy all Harley Balloons

Though these trophies and their implications are still a rumor, it's worth noting that the last big Arkham City news to spring from PS3 Trophies about Nightwing did actually pan out. With any luck, Tim Drake (and maybe even Dick Grayson) fans will have more to do in Arkham City in the near future.

[Via IGN, Kotaku]