We're just a little less than one week away from Irrational Games' final product, BioShock Infinite: Burial at Sea Episode Two. The story finishes as you play through the eyes of Elizabeth and meet up with old friends of Rapture.
From what I've read, you can finish the DLC without using any deadly force, a challenge that some might want to take up. So, will that crossbow that Elizabeth help? As long as there are some non-lethal darts for it. It is a more stealth-based DLC, so patience will be of the essence when playing as Elizabeth.