This movie is designed to be very intense and frightening, especially in the second half. The Wendigo's design in particular is grotesque and horrorific. Multiple scenes of a child interacting with his possessed father create an atmosphere of suspense.
There are very few jumpscares in the film, however, there is a very intense and dark atmosphere throughout its entire runtime which is used to built tension and make viewers feel uneasy through the whole runtime.
The entire film's atmosphere and look is very dark and depressing.
Towards the end of the film, there is a VERY effective jumpscare when an officer finds a young child hiding in a box.
The young boy is seen drawing acts of murder and cannibalism, as well as several sheets of paper that when put together reveal a demonic face.