Some of your abilities can have offensive side effects, like the strength augmentation, which lets you pick up heavier objects and even toss crates across a room to gib unarmored enemies. It's also possible to use the environment to your advantage. Some locations will have barrels lying around that give off a poisonous gas when hit with a bullet, and more leaks appear with more damage. In a demo of the Antarctic level, we watched Alex take out a sentry on a distant catwalk by springing a leak in a canister near his patrol route. Smarter enemies won't fall for such a simple trap--and bots are naturally not affected--but if you have the environmental bio-mod that makes you immune to the gas you might set off enough canisters to fill a room, then retreat there to lure in chasing guards.