-The main theme will be Imperial Guard vs Chaos.
-The Chaos are mainly cultist + a few rare chaos space marines
-The Space Marines are going to be very rare, they are probably only going to support the imperial guard.
-Orks won't be dangerous for anyone, they are going to be outlaws.
-Tao will exist, but they will only be in some quests.
-Eldar and Necrons won't be included.features:
-the player starts as a imperial Soldier, you will probably have the chance to switch to chaos later in the game.
-items can only be taken from the enemys while battle, not like in native after it.
-quite a few quests will be included, it will be like a small storyline.map:
I'm going to use a very nice map Thorgrim made a while ago. It has 3 planets + 1 small one.