Arkham Island East Riddler Trophies - Batman Arkham Asylum

Where to find all of the Arkham Island East Riddler trophies and challenges in Batman Arkham Asylum. It is an area with the Arkham Mansion

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Do I get anything from collecting the rest of the Riddler trophies in Arkham City? I just stopped him at his hideout but there's still a few more around. - Quora

Batman Arkham Asylum Riddler Guide