I played the game, and that's not a wendigo
A wendigo is, depending on the interpretation, a cannibalism spirit that possesses those who engage in cannibalism out of desperation and feels guilty about it, or the possessed human, and there's no change in physical appearance other than looking diseased and/or frostbitten accordingly
What's called a "wendigo" in this game was created for a shitty 2001 horror movie and, if anything, would be best called a leshen