Heads up, Space Marines! New, free content is available for your Warhammer 40k: Space Marines game. Named “Exterminatus”, this adds co-op to this beautiful mix of steel and blood. Two scenarios (Assault On Hab Center Andreas and Escape From Kalkys Facility) are in this one, letting you and up to four friends team up to deal with increasingly deadly and numerous waves of enemies. Devastator, Tactical Marine and Assault Marine classes are available for this, along with all their weapons and perks – so for you guys who’ve wanted to put a chainblade to the meat with some living, breathing allies to watch your back, this is reason to celebrate. Especially since it’s free. And, a final note – this one’s out already for the PS3 and PC, but you 360 guys will have to be content with “soon”. So, stay alert!