NO SPOILERS
It doesn't even have a single jump scare, and if you have seen chain shaw massacre and films like that, then you can easily tolerate the goreness and brutality the film's gonna offer.
So don't expect it to be a movie which will scare you or give you goosebumps.
However I feel certain scenes will make you laugh. Background music is good but it's average
But one thing can't ignore the screenplay and the casting, you will feel the 1hr 36 minutes is as 30 minutes, so that level of engagement is there.
Rule 1 don't expect horror at all,
Rule 2 don't buy any food unless if you can tolerate bloody messy scenes,
Rule 3 try to watch it at night show, might scare you,
Rule 4 don't use any logic or brain.