The name says it all. The Penetrator is built to go where no tower has gone. Eschewing rapid fire and aerial coverage in favor of raw power, the Penetrator is proof that the best way to an alien's heart is through its friends.
With this DLC, you will receive the appropriately-named Penetrator. A slow-firing weapon, it makes up for its inability to target flying units by dealing massive amounts to damage to ground-bound foes. Friends who also possess this DLC will be able to assist you in upgrading the tower during your matches.