Bioshock Infinite introduces the eerie Siren in final Heavy Hitter's trailer

So, last week we got introduced to the Boys of Silence. Remember them? The creepy kids with the wierd mask that walk around and alert other enemies that you're there? Well, they weren't the last enemy in the heavy hitters lineup that would make us nervous. No, Irrational Games has been kind enough to introduce us to the final addition: the Siren.

Around the turn of the century there was an increased interest in spiritual things. By spiritual, of course, we're talking communicating with the dead. The Siren is based upon that, in a sense. The spectre used to be a performer, and now she uses her song to raise the dead. This means that the ten enemies Booker just killed are back and gunning for him again.

Should the player kill the Siren first? Or the enemies around them? Hopefully they make the right call, because this Heavy Hitter is looking to be a real pain.