The new mode pits you and up to three players against a horde of A.I. controlled bots as you attempt to first capture (and then defend) five Command Posts. Capturing a Command Post summons reinforcements and once one side has enough, a transport arrives to take the party into space. You'll then have to fight your way through the opposing side's capital ship and take out critical systems. If you take them all out, you win. If you don't, your progress is kept for the next assault, but the fight shifts back to the planet's surface and the opposing team is given control over a majority of the Command Posts leading to a quick retaliation on your own ship.