Two powerful groups, the Alliance and the Vertex, are fighting for world dominance and victory hinges upon the "Raven" pilots. You are a Raven, an elite mech warrior who must choose sides between the fighting powers. Ravens face the ultimate decision in the fight for survival, either to fiercely defend their chosen side or fight alone and face the wrath of all Ravens.
– Human appearance. First time in the Armored Core series! Humans will appear in the game.
– Active mission mode. Each selected mission has an immediate impact on the ultimate story outcome.
– Head, arm, and leg, each part breaks down, but still able to fight in the mission.