Finding a secrets map reveals the locations of all Riddler Challenges in the area in Batman: Arkham Asylum.
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. Hence, make it easy for yourself by finding a Riddler map in an area to mark all of his challenges on your map. Where to find every Riddler secrets map in Batman: Arkham Asylum
There are a total of nine secrets maps to find in Batman: Arkham Asylum. There is one in each area, but you will not be able to get all of them from the start.
Some maps are in areas that you need to first unlock by progressing the main storyline. Others require you to unlock certain upgrades. The best strategy would be, hence, to go after them after beating the game, which will save you time. Arkham Island, East
Requirements: Cryptographic Sequencer.
There is a guardhouse at the location marked on the map image above. Use your Cryptographic Sequencer to disable its electrical security gate and head on inside to pick up the secrets map from atop a desk. You will also find a Riddler trophy inside.Arkham Island, North
Requirements: Explosive Gel.
Right next to the exit to Arkham East is another guardhouse with another Riddler map. The only way to get inside is through the roof. Find its grappling point to get to the top of the shed and then use your Explosive Gel to create an entrance.Arkham Island, West
Requirements: Cryptographic Sequencer.