The Nephalem were defeated and imprisoned by the lords of Hell, but wake up to find some things (mainly demons) never change...
Spoilers may or may not be tagged properly, so read at your own risk!
- Arbitrary Skepticism: Dr. Hatchnas doesn't really believe that a stone statue could turn into a person...but lives in a base where aliens throw fireballs through mechanisms not understood by science in-universe. Her assistant lampshades this.
- As You Know: In-Universe, Sergeant Spencer explains how much breathable air Marine pressure suits/armor have—everyone follows this except Valla who still fails to understand the lack of air on Mars.
- Boom, Headshot!: Valla's bolas blow up an imp this way.
- Corrupt Corporate Executive: The UAC leadership on Mars knows something fishy is going on with their research, but cover it up.
- Deadpan Snarker: Valla. Comes naturally because she feels like she's Surrounded by Idiots.
- Eternal English: Valla lampshades this when she's able to read all the written signage in the base. It's because the Nephalem preceded "modern" humanity on Mars, who are descendents of the Nephalem-who-fell.
- Guns Are Worthless: Downplayed; the guns shown so far are less effective than Valla's crossbows but do manage to kill imps eventually.
- High-Pressure Blood: Downplayed and justified; a student dies by demon claws but blood merely "splatters" as a "natural...result of what happened when demon claws met vital arteries."
- Human Stone Statue: Involuntarily, the Nephalem.
- Obstructive Bureaucrat: From Valla's perspective, Don Bailey's refusal to immediately aid her hunt comes across as this, though guards not buying every crazy story might be a sign of Genre Savvy depending on circumstance.
- Sealed Badass in a Can: The Nephalem. Defeated, they were cursed and turned to stone. Dug up by the Union Aerospace Corporation, they were regarded as curiosities until Blood Magic wakes one of them up...
- Surrounded by Idiots: Valla really, really, doesn't think highly of anyone not jumping to immediately aid her (or get out of her way) given the threat demons pose.
- The Magic Versus Technology War: Very downplayed as the conflict is purely rhetorical. The Martians are skeptical of Valla's claims of magic, and Valla doesn't understand why nobody has healing potions.