We know that people are extremely excited about the plot in the upcoming BioShock Infinite, but it’s the combat that’s got us hot under the collar. This brand new trailer boasts a healthy selection of both, as it shows protagonist Booker DeWitt chatting with heroine Elizabeth, summoning bats out of his fist, and shoving an unfortunate bystander's face into a saw blade. Hey, a former Pinkerton Agent’s got to do what he’s got to do.