One of the best bad movies ever, on par with The Room
One of the reasons people like watching movies like The Room is the completely alien and wacky logic the movie follows. You're just interested in watching to try to figure out what the madman director's brain is thinking. I found Last Shift hilarious in a similar way.
Last Shift looks cool and has some fun moments, but they're always followed up with complete leaps in logic and characters behaving in goofy abnormal ways.
It's like there's a formula haunting movies follow. People get haunted, they don't believe it at first, then eventually something really crazy happens where they have to acknowledge the ghosts exist. This movie REALLY doesn't understand where that line is, so it's kind of hilarious to watch this lady try to act out these ridiculous scenarios. If you watch it as a bad movie it's kind of fun. If you like it unironically, you're probably as wacky as the director.