Scan the helmet inside to solve ... When you go into the tunnels to search for the Arkham Knight, look for this on a ledge when you first encounter a room with militia repairing some drones.

Official Launch Trailer!SUBSCRIBE! Never Miss A Video: <a href=" is the Official Batman Arkham Knight launch trailer! Words ...

Arkham Knight totally ignored it ... such as Scarecrow's mask, Red Hood's helmet, and more. Suicide Squad paying tribute to Rocksteady's other Batman games doesn't come as a surprise, but what ...

Having a Batman: Arkham Knight Riddler guide to refer to is crucial if you're trying to achieve that elusive 100% completion stat, as there are a massive 243 Riddler puzzles dotted all over Gotham ...