Following a Batman: Arkham Knight Riddler guide is key if you want to reach 100% completion in the game, as Gotham is dotted with a huge 243 Riddler puzzles and it's hard enough just to find them ...

Deathstroke's appearance in Batman: Arkham Knight was also disappointing ... as well as the fact that his face is constantly obscured by a helmet, made him instantly enigmatic and intriguing.