* NightmareFuel: Freya in the pit of corpses.
* OneSceneWonder: RonPerlman as Gunnar, the king of a rival tribe.
* RoleAssociation: [[Film/ThePassionOfTheChrist Jesus]] is a SpaceMarine turned Viking.
** [[BoardwalkEmpire Richard Harrow]] is a badass soldier again, but he gets to keep his attractive face this time. [[spoiler:But he dies this time.]]
* StrawmanHasAPoint: Kainan says the justification for wiping out the Moorwen was to tell themselves they were just animals, thereby implying that they weren't. But for pretty much the entire movie that's ''exactly'' what the Moorwen acts like and no more... a cunning but completely vicious animal. At best, the two are NotSoDifferent, as the Moorwen retaliates for the death of its species by slaughtering those who had nothing to do with it, including people on an ''entirely different planet''.
* BigInJapan: The books are very popular in Germany, for some reason.
* NightmareFuel: Contains more than a little, no surprise. High points include the lovely medical scenes.