Batman: Arkham City - Enigma Conundrum (The Riddler) - Side Mission Walkthrough - YouTube
Bowery Riddler Trophies - Batman: Arkham City Guide - IGN
Museum Riddler Trophies - Batman: Arkham City Guide - IGN
Riddler Trophies - Batman: Arkham City Guide - IGN
Batman:Arkham City] #47 finally I have all 3 of rocksteady's Arkham games platted I'm proud of myself for putting up with riddler for over 800 riddler trophies and those challenges really kicked