If you ever seen a horror movie, the chances are you know from the start where all this is going. And there will be no surprises.
So the main problem of this movie is the plot, its based on classic folklore stories and follows the path that so many movies (or even child stories) have shown before. Which might be good... but it does not exceed any expectation.
So some might call it a classic, some might call it a cliche. Either way, its not unique, its not new, even the creature - I saw it in dozen other movies, and I can name multiple where its simply executed better ("The Ritual", for example).
In other terms, it is mediocre. Characters are not very likable or believable. The motivation of the antagonist (for example) and his image - I believe they are severly lacking any originality or style, they are so superficial it hurts.
Ending is simply weak - culmination is unsatisfying. It is simple (which is good sometimes), but it ain't smart or fulfilling, or entertaining in this case.
So I'd say the score I've given in generous. It's a mediocre movie. Some might say its okay, some might say its bad, but there is no basis to call it great - that is for sure.
I see multiple ways this could've been a better movie (just add a single thing that isn't a trope), but it is obvious that nobody bothered here to create something new or unique, this is just same old same old once again.
