One of the things I love about Rocksteady Games is their devotion to Easter Eggs. The secret in the original Batman: Arkham Asylum that was supposed to tip fans off to the coming Arkham City sequel was so well hidden, the developers ended up having to give out tips to help players find it. With that in mind you’d think players would be combing Batman: Arkham City over and have found everything by now, but you’d be wrong.
Despite being over half a year old at this point, Director Sefton Hill said at the Kapow! London Comic Con that there were still three or four hidden secrets in the game that no one has managed to uncover yet. He admitted that some of them are subtle, but that one of the secrets that was even in an early demo has yet to be found. Hill did admit surprise that players were able to crack the Scarecrow Code within only a few days.
Unfortunately they didn’t feel like giving players any clues on where to find the remaining secrets, but maybe it will be enough to get players to pick up the game and run through it again, especially with the new Harley Quinn DLC coming soon.