A mere month away from the release of
Batman: Arkham Origins, Warner Brothers Interative Entertainment released a video for the Deathstroke challenge pack DLC, which features Deathstroke as a fully playable character, three skins, and two extra challenge levels. And all you have to do to get it is preorder the game.
Batman: Arkham Origins is set for worldwide release on October 25, 2013 for Xbox 360, Playstation 3, Wii U and Windows PC.