SPOILERS AHEAD. YOU’VE BEEN WARNED.
With the release of Batman: Arkham Knight comes the return of one of the series most mystical and mysterious characters: Azrael. As fans will be happy to hear, Batman: Arkham Knight allows gamers to play as Azrael during the Heir To The Cowl missions.
If you want to play as Azrael, you’ll need to have some patience. You must first reach Miagani Island in order to begin this optional side-quest line. However once you are there, you’ll just need to keep your eyes open for a rooftop with a flaming bat symbol.
Either that, or you can just go to this location on your map:
One you get there, you’ll be able to initiate a cutscene with Azrael followed by a challenge in which you must defeat a group of enemies as Azrael without getting hit. This one is pretty straightforward. Just counter and dodge as you take out the enemies.