If you're a fan of It Comes at Night, Hereditary or The Witch, I'd say give this one a go. I thoroughly enjoyed it.
There was only one questionable choice made throughout the entire movie, and it was a big one, but all the choices characters made other than that one are believable when you view them through the lense of who these people are.
I'd give it five stars if not for that single choice that spoils the movie a tad. But, to be fair, sometimes we make bad choices.