The player controls a special forces soldier codenamed Nomad whose weapons can be customized without pausing the flow of time, for example changing firing modes, changing scopes or adding sound suppressors. The player is also capable of selecting various modes in Nomad's military prototype "Nano Suit" which draw power from the suit's energy. When the suit's energy is depleted, no modes can be used and the player is more vulnerable to damage before the suit recharges. One of four modes can be selected: Armour deflects damage and recharges the suit's energy faster; Strength allows stronger hand-to-hand combat, the ability to throw objects and enemies with deadly force, higher jumps, steadier aiming and reduced weapon recoil; Speed increases running and swimming speed, as well as other forms of motion; and Cloak renders Nomad almost completely invisible and suppresses movement noise.