THQ has announced that the co-op Action game fantasy Warhammer 40,000: Space Marines will be added to the game via a free update which will be released in early October. Entitled Exterminatus mode, this mode will give the opportunity to fight hordes of enemies in increasing numbers with three other friends online. We will have between classes to choose from: Marine Tactical, Devastator, and Assault Marines.

On the occasion of the announcement, the publisher has released a trio of new videos showing some of the weapons that will be part of our arsenal which Chainsword, Power Axe, and the Thunder Hammer.

Warhammer 40,000-Thunder Hammer Trailer | HD version
Warhammer 40,000 - Power Axe Trailer | HD version
Warhammer 40,000 - Chainsword Trailer | HD version