Dying of the Light | Warhammer 40K: Space Marine | Part 4 

warp = hell remember that

5:48 Horus Heresy the cause of it? Horus having a gigantic temper tantrum and joined the chaos gods that caused a really REALLY big war

There are a host of 40k content creators that specialize in lore. Luetin09 is usually my go to. He just released a 40k beginners guide, but it's nearly 2 hours. There were 20 Primarch created by the Emperor genetically engineered creations his sons and each was given their own legion. Two legions were erased for one reason or another writers left it open. The other 18 were split by the Horus Heresy. 9 of the legions turned traitor and became corrupted by the Chaos gods. So the antagonist is a member if one of the traitor legions.

There's some multi player elements in space marine 2. You may want to find two others to play it with you before get started T.

1:00:26 actually thats the motto of another Xenos faction. The T'au. Careful T or you could be accused of heresy.