I shall join my kin and slay any and all foolish enough to be deemed enemies of the Craftworld. But particular satisfaction will be in dispatching of any Chaos worshipper. Whether they sing the song of Slaanesh or cry out to their Blood God, they will all die by my hand.

Ultramarines.

Depends on what race I´m playing:

As an Ork: Killing anyone!
As a SM: Killing Xenos and traitors alike
As a CSM: Lapdogs of the Corpse Emperor
As an Eldar: Mon-Keighs

I got to say orks, it is a lot of fun killing orks.

Second to none eldar and Space marines.

I heard that there would be tyranids in the game (read some article a while back, said they would be used as a "balancing force" by the game makers) so they would be at the top with eldar. orks and chaos marines/cultists have been done in Space marine so i'm content with that for now

Orks must die

Deff the marines. If the option comes up then banshee exarch mirror swords will find there way to everyone >D

The pathetic followers of the false emperor.

Whoever the Craftworld deems necessary, though akin to my brothers and sisters have proposed, I will take distinct notice of the Servants of Chaos, and make sure they are the first to feel the bite of my blade

Eldar, bleh.