Complete buggy mess with game design that's confusing at best and outright antagonistic at other times. It had the chance to be something amazing and it completely dropped the ball.
Taking away the bugs, the game is still bad. Bad mechanics, unutilized possibilities, and a story that leaves you bewildered until it decides to slap you in the face with a better storyline created before it, in an attempt to drive any of its story home.
Nice ideas, terrible execution. Really hope this isn't the last in the FNAF franchise cause this really leaves a bad taste in the mouth.