BioShock Infinite ‘Siren’ revealed

Today, Irrational Games released the fourth video of their Heavy Hitters series, introducing the latest enemy you'll encounter in BioShock Infinite: the Siren.

The Siren is a "nod to a major social movement at the turn of the century"; it was a movement that saw people attempting to contact the dead.

As such, the Siren is in contact with the other world and can bring Booker's enemies back to life to fight once again.  As creative director Ken Levine notes, the challenge with facing the Siren will be to decide whether to focus first on her or the enemies she brings back to life that shoot you.