There is a lot of horror cliché thingy happening in the movie and in the end the writer don't have any idea how to connect the dots and explain why these things are happening so the writer decided to just end it without explaining the reasons and end the movie . And there it is -u wasted your time (1hr 25min). I should suggest to put sth like "congratulations, u have sucessfully wasted 1hr and 25 mins" in
the end.