Here is some action packed Space Marine footage from the PC version.

In Warhammer® 40,000®: Space Marine® you are Captain Titus of the Ultramarines, humanity's last hope for survival in a war-ridden future.

Step into the armor of this superhuman warrior and use a lethal combination of deadly weapons to crush overwhelming alien forces.

Fight against the savage Orks and the unholy forces of Chaos in a brutally violent world based on the richest science fiction fantasy ever created.