Director Sefton Hill of Rocksteady insists there are still 3 or 4 easter eggs in Batman: Arkham City left undiscovered. One, he says, was even in one of the first demos of the game released. "There are still 3 or 4 things that people haven't seen - some of them very subtle things." Hill said at a panel at London's Kapow! Comic Con, "There's one that we had right in one of the first demos that we did that nobody has found - it's in there if you look hard enough."
Source: IGN
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Love the little ally way where your parents where gunned down and you can crouch down and pay your respects, awsome batman pose 
