Between the writing and acting one might legitimately mistake it for a comedy.
Horror comedies exist, and generally run with the "deliberately awful" concept until it becomes funny. Not so much in the past, where the horror and comedy could actually elicit conflicting emotions (or a rollercoaster ride of hilarity and nightmares), but then again all genres change with time. In general, most horror comedies today result from the same thing that made movies like Gremlins and Army of Darkness the way they were: director has script, director likes the script but can't hire good actors/sfx company, director decides to take a hatchet to the script, go overboard on the rubber monster effects and hire the hammiest actors he can find. Oh, and invest in gallons upon gallons of fake blood and make plenty of self-conscious jabs at its own insanity.
This is also why direct to DVD and TV horror films manage to make money: they thrive on purposeful awfulness, actors gobbling up the sets, and just plain old schlock. They get around their budget problems by being so bad you can't help but have fun--that's why Sharknado is so popular but low-budget "serious" horror movies just come across as dull.
If you're wanting better writing, acting and directing, take a look at the more recent theatrical IT. It's basically only the first half of the book (the second is coming next year), but the acting is better, the directing is far more competent and the writing--while not the best--is miles above your typical modern horror flick. The downside is, if you get easily annoyed by rapid-fire jump scares, a good portion of the first half of the movie is going to drive you insane.