Ok, ill start with the bad so that you don't read half the review and run off to buy the game without the full picture.
As my fellow reviewer has already mentioned, the copy protection is a tad much, but still tolerable. My biggest gripe with this game was that it was released with a hell of a bug, on certain systems you would have the game crash a lot and corrupt your saves, which meant that while the game would reload fine, all missions would be removed from the world maps. I believe this has been patched, and Steam supposedly updates automatically, mine doesn't seem to have, it still crashes.
My other big gripe is that there is only the one campaign, the Space Marines... I mean come on! Ok so a lot of work has gone into this, but it still seems lazy to have 4 races (yes that's right, only the 4 this time, bit of a step back there really Relic don't you think) and not have a campaign for each.
Ok, that said, this game is Immense! I love the fact that you can customise your marines so fully, spec'ing for either ranged combat or all out melee and gaining new and powerful abilities along the way. Wargear was a nice touch to the game also, through missions or simply as drops in game you can collect weapons and armour and other useful items and equip them to your squad,. Making them even more powerful.
The game offers a number of different playing styles, from slow and steady to fast carnage, so you'll likely find the tactic that suits you and find that you'll enjoy despite the few issues with the game you may notice yourself. Hardcore fans, try not to be too disappointed. New to DoW or Warhammer? Then you'll love this game.
I think there has been a lot more focus on multiplayer for this title, the lack of single player content proves this, but you never know, more campaigns and perhaps extra races will be added later via updates or expansions, fingers crossed hey ^^
Ive also given this game 3 stars, because from my personal point of view i felt i lacked too much.