The Batman: Arkham Unhinged is a digital exclusive comic series based off of Batman: Arkham City. It is written by Derek Fridolfs.
The story is divided in many story arcs.
1st Story Arc - Issues #1, #2, #3
2nd Story Arc - Issues #4, #5, #6
Hugo Strange has captured Two-Face and Catwoman, and now is searching for Batman. Meanwhile, Commissioner Gordon searches for evidence to bring down Strange. Batman discovers a connection between Strange and Mayor Sharp.
3rd Story Arc - Issues #7, #8, #9
4th Story Arc - Issue #10
5th Story Arc - Issues #11, #12, #13
Title: Separation Anxiety
The Abramovici Twins' ("Hammer" and "Sickle") past and their presence in Arkham City is explained.
6th Story Arc - Issues #14, #15, #16
7th Story Arc - Issues #17, #18, #19
8th Story Arc - Issues #20, #21, #22
Title: Crocodile Tears
Killer Croc's origin story, explains where he came from and how he ended up in Arkham City.
9th Story Arc Issues #23, #24, #25
Title: Vicki in Wonderland
The Mad Hatter's throwing a party...a search party, for his "Alice!" Unfortunately for her, his first invitee is Vicki Vale, still in Arkham City after the helicopter crash. Once she's intercepted by Tweedledum and Tweedledee, will she be able to RSVP "NO" or is her fate sealed? And who else unlucky enough to be on his guest list?!
10th Story Arc Issues #26, #27, #28
11th Story Arc Issues #29, #30, #31
Title: Clown Court
The streets of Arkham City are empty, silent. What will happen when Batman learns everyone's flocked to the courthouse to witness a very peculiar court case...presided over by none other than Harvey Dent, and a jury of some of the greatest villains in Gotham history?
12th Story Arc Issues #32, #33, #34
In a place like Arkham City, a church may be little more than just another abandoned building. Nevertheless, for a group of innocents, Gotham police, and one very guilty Mayor Sharp, it's where they've come for sanctuary. A gathering mob doesn't feel that way, but a mysterious protector will show them otherwise.
13th Story Arc Issues #35, #36, #37
Title: Eviction Notice
This Story Arc explores Black Mask's transformation from Roman Sionis to a vicious criminal, captured behind the walls of Arkham City...with some of his least favorite fellow convicts!
14th Story Arc Issues #38, #39, #40
Batman flashes back to an early encounter with Talia, and her father, Ra's al Ghul. When she and her father save Batman's life, will the three be able to forge a partnership to save the world? And what happened that night in Metropolis between Talia and her beloved?
15th Story Arc Issues #41, #42, #43
Title: Uninvited Guests Wayne Manor is under siege by TYGER Soldiers, as Robin and Nightwing try to fend off the attack. With their mentor in Arkham City, is there any way they can stop Hugo Strange's last-ditch effort to destroy Batman's world?