The Warhammer 40,000 universe is rich and diverse, full of fascinating factions and complex histories for fans to delve into, and the case is no different with Warhammer 40,000: Space Marine 2. Each of these factions is exceptionally well documented and detailed, but by far one of the most compelling are the Adeptus Astartes, also known as the Space Marines. One reason for their huge popularity within the Warhammer community, although obviously not exclusively, is their incredible armor.