Dom has hurt his right knee. However, in the aerial shot of the friends going towards the forest, he is limping with his left leg.
The characters enter the first cabin during the pouring rain, but Hutch's clothes are completely dry once inside.
When the group enters the cabin, the door opens inward. A moment later when Luke opens the door to peer into the woods, the door opens outward.
At 43 minutes, Luke goes ahead and Hutch moves quickly to go after him, putting on his backpack as he walks. His left shoulder strap is twisted, then fixed in the next shot, then twisted again, and then fixed in the long shot.
The subtitles (on Netflix at least) previously described the cult members as speaking and chanting in Swedish. However, they are clearly speaking a language other than Swedish.
The hiking appears to take place in or around summertime. According to the map, they are in Sarek, far up north in Sweden where the sun never sets in the summertime. In the movie, it's pitch black at night.
When Hutch suggests a path to Luke, he draws a line on a map through a glacier-heavy landscape which is clearly inconsistent with the landscape shown in the film.