An extended version of the Batman: Arkham Asylum trailer is now available. Word is: "Join Sefton Hill, Game Director at Rocksteady in this extended video as he guides you through one of the Challenge Modes from Batman: Arkham Asylum showing off the Invisible Predator gameplay moves. Learn to propel yourself into the shadows, take out enemies with pre-planned explosive attacks and finish them off with a devastating glide kick." You can find the movie on ActionTrip, AtomicGamer, and Gamer's Hell.