In you haven't heard, Ra's Al Ghul, a nemesis of the Caped Crusader, has dug his talons into DC Universe Online, and it's up to you to stop him from killing millions of innocent people by joining other heroes in this 4-man alert and defeat Ra's and his lethal minions deep in his mountain stronghold. Jens Andersen, the creative director for DCUO, shares the latest visuals in a walkthrough video released by IGN and presents a guided tour of the inner sanctum of Ra's al Ghul's League of Assassins. Each member of the league has his or her own mystic power you must overcome before you face off against Ra's al Ghul himself.

This 4-man alert is just part of the new additions to DC Universe Online in Update 3. Get the whole scoop from Krystalle Voecks, who recently sat down with the developers to discuss the patch, then check out the video after the break.

This article was originally published on Massively.