SnakeDoctor
Super Freak
Report indicates Harley Quinn story-based DLC and Robin gameplay is coming ...
https://www.gamespot.com/news/batman-arkham-city-adding-harley-quinn-dlc-report-6369684
Says that a list of trophies obtained lists 10 new "Harley Quinn DLC" trophies. The content of the trophies sounds more like story than challenge maps (clearing dry docks, diffusing bombs, zip kicking thugs). One trophy also references using five different Robin quick gadgets in the course of the Quinn DLC -- which may mean Robin free roam gameplay.
SnakeDoc
https://www.gamespot.com/news/batman-arkham-city-adding-harley-quinn-dlc-report-6369684
Says that a list of trophies obtained lists 10 new "Harley Quinn DLC" trophies. The content of the trophies sounds more like story than challenge maps (clearing dry docks, diffusing bombs, zip kicking thugs). One trophy also references using five different Robin quick gadgets in the course of the Quinn DLC -- which may mean Robin free roam gameplay.
SnakeDoc