To celebrate the announcement of the Batman: Arkham Asylum demo that’s coming this Friday, Eidos has released yet another trailer to show off the game. Instead of ruining the demo itself, it focuses mostly on the bad guys and girls we’ll be encountering in the full product. Let’s just hope they’ve kept a few things under wraps or with the amount of footage we’ve seen from this game it will really feel like we’ve already played the damn thing start to finish before it even hits the shelves later this month.