While your skittish foes can be a problem, it's not like Sam is a stranger to this business. You'll find a pleasantly rich set of moves available to Sam for dealing with enemies, quietly and efficiently. Quiet, stealthy killing is his stock in trade and Chaos Theory finds the veteran hero in fine form. You'll be able to sneak around in shadow, taking advantage of terrain and using your various goggles that provide different vision modes such as infra red and ultra violet in order to clear the obstacles between Sam and his objectives. Microsoft reps also showed off some nice new bits of interactivity that will help to enrich the experience, namely being able to slice the walls of tents open to make your own entrance or hiding spots when needed, and the ability to change Sam's weapon stance to right or left handed by clicking in the left stick.