They'll be providing the role of the villains in Space Marine, and Captain Titus will be leading the brawl against them. It's for Xbox 360, PS3 and PC this year.
"We have multiple types of Chaos Space Marine enemies, equipped with a variety of heavy weapons (ex. Autocannon, Plasma Cannon, etc.), Snipers, and some can pull out melee weapons and engage you in close quarters," Relic's Raphael van Lierop.
"Additionally, we’re throwing Renegade Guard at you -- who can present a real ranged threat when they attack en masse."
"There are Bloodletters, intimidating demons, who are a very high-damage melee enemy -- they attack in groups and kind of ‘phase’ in and out, making them very difficult to target with ranged weapons, and when they get up close they attack you with vicious swords and rending attacks that can take you down quickly if you’re not careful," he added.
"There are Psykers, who can damage you from afar with psychic blasts and warp in other enemy units to mess with you. So, just like with the Orks, Chaos presents a lot of variety and gives us tons of opportunity to layer the enemies together in interesting scenarios to provide a challenge that really puts a whole new spin on the game by the time you encounter them."
Warhammer 40K: Space Marine releases on Xbox 360, PS3 and PC this year.