The filming (colors..septia?), background music and sparse, terse script do a great job of setting up spooky suspense. Within minutes the viewer is drawn into this desperate setting! The characters are not overdrawn with background but are set up very well. Indeed, the movie doesn't try to explain the plight, story, etc., of the infamous Donner party but instead is a largely fictionalized account of its infamous group which set out to seek help, long referred to as "The Forlorn Hope".
Given the above correction (changing the point of view) the film then takes some missteps, primarily in its depiction of the ultimate vice practiced by the "The Forlorn Hope", which was much too compromised here. Also, the major conflict between the two male leads becomes too black and white; e.g., Glover's character becomes too much of a bogeyman and the protagonist too virtuous. In contrast, TFH's women are under drawn in the second half of the flick.
With some work this film could have been a great thriller.
Given the above correction (changing the point of view) the film then takes some missteps, primarily in its depiction of the ultimate vice practiced by the "The Forlorn Hope", which was much too compromised here. Also, the major conflict between the two male leads becomes too black and white; e.g., Glover's character becomes too much of a bogeyman and the protagonist too virtuous. In contrast, TFH's women are under drawn in the second half of the flick.
With some work this film could have been a great thriller.