Another trailer was released upon the gaming world for Rocksteady’s Batman: Arkham Knight, and this one showcases one of the most iconic characters of the DC universe – Harley Quinn. For those of you who pre-order the game, you’ll also get a Harley Quinn story mission DLC. The gameplay for Harley Quinn looks insane and will probably keep our thumbs preoccupied for a good few hours/days/weeks. The game is set to be released on June 23rd, 2015.