Arkham North1. Now I see it, now you don't!
On the bottom floor of the ruined building in the northest is an arched doorway with thebody of a question mark on it. The dot is on the ceiling high above. You'll have to line this up just right to solve the riddle. 2. Let's face it, there are two Dents on the wall.
In the small guard building in the west, hack the security door panel with your Cryptographic Sequencer, then look inside for a wall covered in Vote Dent posters. Scan it to solve this one.3. Tweedledum and Tweedledee SAW it, can you SEE it?
In the northeast corner of the area, on the ground, is a playground see saw. Take a scan of it to solve this riddle. Unlocks Tweedledum and Tweedledee Character Bio
Arkham West1. Does Scarecrow's gas break down barriers as it drives you insane?
Just before the door leading to Arkham East there is a series of stone archways. Grapple onto the one closest to the door then look up at the cliff wall with Detective Mode on. Use your Ultra Batclaw to pull down the weakened wall section high above. Behind it are a few of Scarecrow's gas tanks. Snap a shot of them to solve the riddle. 2. Zsasz is counting on you finding his work.
Above the entrance to the Penitentiary is a security door. You can hack the panel on its rear wall with your Cryptographic Sequencer -- you'll need the range extension to do so. Go inside and look for a group of dead guards playing cards around a table. Snap a shot of this to solve the riddle.3. Do you see what I can see? No? Then maybe I am in a stronger position.
Grapple above the entrance to the Penitentiary and you'll see a secure door on an upper platform. Switch on Detective Mode. Below this platform -- right at the western entrance to the Penitentiary -- is a Riddle solution -- half of a question mark. Line up one of the guard rail posts with a dot on it to complete the "?" and solve the riddle.
Arkham East1. The legacy of this island has been well and truly buried.
It hasn't been that well buried -- the unearthed grave of Amadeus Arkham is in the cemetery. Locate it and snap a scan of the grave stone to solve this riddle.2. Gotham's greatest family towers over the city.
In the northeast portion of this area is a small inlet. Stand on the edge of this and look across the water at the cityscape. Zoom in on the tallest building with a neon W -- the Waynetech building. Snap it with an Environmental Scan to solve this riddle. Unlocks Bruce Wayne Character Bio.3. My challenges appear to those with the correct position in life.
A question mark "top" is painted over a large section of the southest portion of the Mansion rooftop. To line up the "dot," you'll need to climb to the top of the tall clocktower using the ledges as grapple points. Look down from the southern edge of the top ledge and you'll see a small dot to line up with the large ? body below.