At the moment details are limited, what we do know is the player can take control of a squad of 4 space marines. an Assault Marine, a Tactical Marine, a Sergeant and a Devastator Marine and as the game progresses upgrades are earned for each. This  allows the player to customise the squad as the game goes on.

At the moment the story concerns an Ork invasion of an Imperial Forge World. (Weapons Factory). I doubt they’ll win any awards for the story.