2K Games has sent over new a BioShock Infinite trailer revealing one of the game's Heavy Hitters mini-boss types, the Boys of Silence.
Creative director Ken Levine says: "Their purpose in the world is, think of the cameras in BioShock 1, but think of them walking around looking for you."
Lead artist Shawn Robertson adds: "The way they work is they're blind, they can't see you but they can hear you. In the levels that you see them in you have to make a decision on whether you're going to try to sneak around them or engage them directly, but if you anger them they can call in backup."
Speaking in a recent interview with CVG, Levine said the Heavy Hitters will add more variety and strategy to the franchise's combat.