(at around 52 mins) After being shot, Johnny is seen laying almost evenly across from the white truck. A few moments later, an above shot shows Johnny laying perpendicular with the truck behind his head.
(at around 43 mins) In Aurora's killing scene, Johnny strikes the hook on her head facing her, yet when he pulls the head out of her back, the hook is turned the other way.
(at around 33 mins) When the display cabinet is shown in the ranger station, a small poster misspells "among" as "amoung".
(at around 1h 3 mins) The wood splitter is mounted on a single axle trailer and the trailer's tires have chains. Chains are only effective when they are put onto a wheel that is connected to the engine. Trailers, by definition, do not have these.
Nearly every scene involves a rental cabin or Forest Ranger lodge / museum, and implies some kind of major roadway with extremely accessible driveways right up to the cabins, but a lot of the film seems to look very remote, such as POV tracking of either the villain hiking endlessly through woods or fields, or a young person being pursued and getting lost in the woods. More than likely, all these places would be much more closely situated to each other, and even in darkness the clear driveways and road would easy to find, for use as a guide.
No one in this movie has peripheral vision or the ability to hear a guy carelessly stomp through the woods.
Johnny wanders through the woods carrying chains that make absolutely no noise at all, allowing him to get close to his victims without alerting them. Rattling chains should alert anyone close to him.