I'm going for the achievement/trophy of achieving the 100% mark but there is no real distinction as to what that means. I've beaten story mode, solved all the riddler puzzles, and collected all the spirit of arkham diaries.
So do I have to beat all the challenge rooms or something?
Help a fella out.
Batman: Arkham Asylum
Game » consists of 28 releases. Released Aug 25, 2009
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