I didn't really think about how bad Until Dawn's gimmick would hamstring it until I was halfway through the movie. In any horror movie, we get annoyed at dumb horror movie logic, but helps add tension since characters are flirting with death. But in Until Dawn, they have a bunch of tries to make it through one night and everyone has to die before the next night starts.
So, characters have to be extra stupid, repeatedly, and there are no stakes to any of it. Once one of them dies, you're just watching for how the rest will get taken out. None of the plot advancement is earned; at one point, it takes a girl's psychic powers to tell everyone to check the top drawer on the only desk in a room. The goofy logic gets to the point that there's no tension.
But the kills are pretty damned good. They're gory, over the top, and generally entertaining. As pure popcorn fare, it's not the worst thing to drop. But it's in that "so bad it winds up being goofy fun" lane that movies like The Bye Bye Man and Tarot occupy, where it's best served as training wheels for horror newcomers.