There are 3 Riddler Bomb Rioters on Miagani Island. Batman Arkham Knight has 315 Riddler Collectibles in total (179 Trophies, 40 Riddles, 6 Bomb Rioters, .\rbr\rbrMiagani Island Riddler Victims consist of, once again, three targets. These rioters can be found in the south, west and north of Miagani Island. One of them .\rbr\rbrWalkthroughGuide for all Riddler Trophies and collectibles to collect in Batman: Arkham Knight [Full HD 1080p at 60fps] Batman: Arkham Knight Riddler .\rbr\rbrWelcome to Batman: Arkham Knight! The Riddler has planted bombs in a few rioters around Gotham. These are all three of the victims found on Miagani Island .