Followed by the third part of the trailer that tells the story of the beginning of the conflict between the Space Marines and Orks Warhammer 40,000: Space Marines, sci-fi action game from THQ. After the first and the second part, here's the third one that tells, through the cinematic, the Space Marines and weapons and technology available to them. Here's the video below.

Warhammer 40,000: Space Marine - Our Weapons | HD version