There are a total of 51 brain-busting riddles that the Riddler has left behind for you to solve in Batman: Arkham Asylum. They are part of a series of Riddler’s Challenges (over 240) that you must ...
The secrets maps reveal the locations of all 240 Riddler Challenges in Batman: Arkham Asylum. Considering the sheer number, finding and solving them all on your own is going to take considerable time.