Who were these guys? (spoilers)
Someone, please explain!
This is what I think:
Leo and Elvis are "cleaners" who apparently work for some shady organization that removes corpses. We never really find out who pays them or why they exist.
Leo has a weak stomach. Elvis, more cynical and world-weary, is not bothered by anything, and is not surprised by anything. He seems almost to be expecting to find a Huldra there.
These guys are sent by Einar (or someone) to dispose of a corpse. Once they noticed something highly unusual in this cottage, Elvis immediately called for "Einar and the others" to come take over. He told Leo not to touch anything.
Then these other armed dudes working for Nina (whom we never meet) show up instead, and have no compunction about shooting anyone or any thing that gets in their way.
What's going on here? Are Elvis and Leo just your average police department or morgue employees who have to go dispose of bodies in remote locations, or what? How did they even know the old man was dead, let alone where his hiding place was in that remote forest?
My theory is that Elvis and Leo are part of the old man's organization that was protecting or hiding this Huldra. Nina's group was trying to kidnap Thale for their own nefarious purposes. Then, of course, there are the other Huldra hanging around, watching, searching.
I liked it. An interesting, thought provoking film, without too much exposition, much left to the viewer's imagination to figure out. I'm not sure that a sequel is required, but it'll be interesting to see where they go with this.