Why so much hype?

It's funny, it's tense, it features two great performances from two actors and the director expertly creates a web of odd tension where you actually don't know what is happening for the majority of the run time.

There's a more than satisfactory amount of boom-boom in the movie's trim running time.

One of the film's great tricks is that, for a time, you think it will go down a rabbit hole of unrealistic glorification.