Each unit has an advantage over certain unit types so choose carefully! The machine gun soldier, for example, excels against infantry units. Alternatively, the sniper units can pick off infantry from greater distances. Each kill earns you points, and these points can be used to place new units. Aside from the troops, you can also use support items such as a smoke grenade and adrenaline rush – these provide tactical advantages. Can you outwit the terrorists and retrieve all the missiles in time?