Two weeks following the events of Batman: Arkham City, several GCPD officers suddenly go missing. The culprit seems to be Harley Quinn, having escaped custody and undergone extreme mental stress following her recent loss. She has now taken over the industrial district of the old Arkham City site, which Batman infiltrates and ultimately gets himself captured so Robin will come to his rescue, and together, they can stop Harley and save the cops before the night is over.
Arkham has moved
Did You Know?
In the DLC, " "Harley's Revenge", you play as as both Robin (Tim Drake) and Batman. See more
After infecting Batman with his poisonous blood, Joker says he had also shipped some all over Gotham, possibly infecting even more people. By the game's end, Batman manages to cure himself, but it is never mentioned if the other people in Gotham managed to be cured as well.
It is implied, however that the cure likely will be sent out to the other infected by way of mass producing the cure which is now within Batman's bloodstream. See more
Computer, activate Protocol 11...
Ra's al Ghul
What are you doing?
[dies; self-destruct countdown begins
Finding the positive early pregnancy test next to Harley Quinn's costume unlocks an easter egg where Harley sings a rather chilling version of "Hush Little Baby" over the final seconds of the credits. See more
Version of Nightwing: The Series
Only You (And You Alone)
Performed by Mark Hamill
Written by Buck Ram
Published by SCREEN GEMS-EMI MUSIC INC. (BMI) in the world excluding the United States, and TRO - Hollis Music, Inc. (BMI) See more