Lightning fast FPS where you are always on the move, running, double jumping, sliding, diving, slowing down time, and shooting holes through walls to keep your momentum. When you are in the rhythm it is a zen like experience, the most satisfying part being the instant swapping of guns. When you are low on ammo the game automatically picks up a gun at your feet or falling from the enemy you just killed, so the action is fast frantic and nonstop. There are some very light story elements but you are really here for the combat which is so highly polished I couldn't put it down.