PC Gamer writes: "Oh yes. Tyranids are confirmed as the third playable race in Dawn of War 2’s standalone expansion Retribution. This means a full story-driven single player campaign for Warhammer 40,000’s swarming, spiky, acid-spitting aliens, for the first time ever. I’ve seen it in action, and it’s horrific. But before I tell you the gruesome details, there’s a twist to this announcement: in Retribution’s Tyranid campaign, unlike its others, you have just one hero. You’re the Swarmlord."