Message from Arkham:

"RockSteady, I forgive your sins because...

Finally, the main villain is the Scarecrow and his toxin.
The role of the Joker. It is awesome, marvelous, one of the best I've ever seen and read.
You gave us our "Winter soldier"
My big, brutal, dark batmobile. Full of gadgets and ready to explode tons of tanks and drones.
Gotham.
The tributes to "The Killing joke" and "A death on the family"
Tag-team combats, hand by hand with NightWing, Robin and Cat Woman
Poison Ivy, her plants and her main role in the story.
The long side quest of the Riddle..
I burnt the Oswald Cobblepot's money.
I hit both faces of Harvey.
I have seen Mr Pyg's madness.
The fight against Man Bat across the sky.
The new options of combat, and some new combos and fatalities..
Everything has finished where everything began.
The two aditional cutscenes activated after the Knightfall protocol"

It's simply, I'm a fan of the bat and I enjoyed so much playing this game.

In my opinion this is the ranking of the saga: Arkham Asylum, Arkham Knight, Arkham Origins, Akham City, but if you want to play them in chronological order, you must play them in this way: Arkham Origins, Arkham Asylum, Akham City, Arkham Knight.

It seems this is the end of a great saga, but I hope the dark knight returns...