Is there anything more to do in Batman Arkham City after you completed everything?

I finished the story mode Batman Arkham City, finished the epilogue mission of Catwoman, completed all Riddler puzzles, trophies, side missions, %26amp; even cracked the Scarcrow's easter egg.



Everytime I load story mode the message I get is "Arkham City is now secure to be shut down". Is this another objective or is it just telling me that I've completed everything?Is there anything more to do in Batman Arkham City after you completed everything?
You've pretty much beaten the game, but you can replay the story on new game plus mode. This includes a harder difficulty and a few new surprise perks, for example, the counterattack symbols don't appear over the heads of enemies during a fight.

vocelli

daily reckoning