Hey Folks, NOTE: My achievement popped when I completed Shark Bait, which would have been 26-stars for me. Since the same thing happened to my Catwoman and Nightwing achievement, I am going to assume that one (or more) of the previous challenges did not count for Azrael, except I went bottom to the top this time.... Please comment if you have the same issues.
For this Achievement, you need to earn 21 stars as Azrael, which is actually quite simple with all the AR challenges that Arkham Knight has to offer. You should be able to unlock this by doing the Combat or Predator Challenges. You do not need to 3-star the challenges, just accumulate 21 total stars.
Combat Reminder/Hint: Environmental Takedowns are a x100 multiplier, so use them if available on a high combo. Also, for getting a freeflow perfection(never breaking your combo) you will score your strike counter multiplied by 100 at the end of the round. (22 combo x 100 = 2200 bonus)
A Hint as Azrael:
have the destroy weapon ability, so use that to your advantage when fighting riot shields and stun batons. Picking up a baseball bat of the ground (
) will still allow you to wail on as many thugs as possible which I found very useful in the combat challenges.
You can play the following challenges to get 21 stars(my stars are in parentheses):
-Shark Bait (3 stars)
-Precinct (3 stars)
-High Interest (2 stars)
-Flying Grayson (make sure to use environmental takedowns) (3 stars)
-Feline Frenzy (The baseball bat is very helpful here) (3 Stars)
-Newton's Cradle (3 Stars)
-Teen Titan (3 Stars)
-Combo Master (3 Stars)
-Azrael's Atonement (3 Stars)
-Smash and Grab
-Revive and Shine
-Under the Pale Moonlight
That's a total of 60 Stars, so play at your strengths, and don't stress out too much.