Return to Arkham and experience two of the most critically acclaimed titles of the last generation - Batman: Arkham Asylum and Batman: Arkham City, with fully remastered and updated visuals. Batman: Return to Arkham includes the comprehensive versions of both games and includes all previously released additional content.
It would not be surprising if Catwoman, Nightwing and Robin received some Challenge Map packs like Batman: Arkham City, or perhaps they will get some play time in a DLC release. Description from theparanoidgamer.com. I searched for this on bing.com/images