Overrated

I do not agree at all. Given how everyone seems to be unanimous in their praise of this movie, it's overrated.

The movie isn't scary because the ghosts never pose a direct threat to the protagonist. It manages to develop an effective atmosphere, but the atmosphere loses its impact once it becomes clear the ghosts are only trying to scare her. In order for the scares to be effective, the protagonist's life needs to be danger, and throughout the vast majority of the movie, she's not in danger of being killed.

The movie doesn't work from a psychological angle either because it's revealed too early on that there are ghosts messing with her. Seeing the ghosts and then learning who they are and what's motivating them before the halfway mark removes much of mystery from the movie, and when an officer confirms that strange occurrences have been taking place at the old station, it can't be reasonably argued that the events are taking place inside the protagonist's head.

The story is nothing new, but that's not a deal breaker because how the story is told is more important. The story is falls apart because Last Shift can't decide whether it wants to be a psychological thriller or a straight-up horror film, so it becomes unsatisfying mixture of both. It doesn't work as a thriller because it reveals too much information too early on. It doesn't work as a horror movie because it doesn't do enough with the actual menace of the ghosts. And it all builds up to an unsatisfying and frustrating ending, where any cleverness is undone by plot holes and absurdity.

In the end, this seems like one of those movies that gets praised because it's outside of the cinematic mainstream and it has a few elements that work, when as a whole, it's severely lacking in key areas.