Using the edge-side of his knife to spark the fire = stupid.
Destroying the edge. What an eejit. Use the backside. Bad directing of a city boy actor who didn't know better in front of a camera.
A guy living for 7 years or whatever it was, having to keep a knife sharp - he would know better.
No real gripes beyond that silly little thing. Clearly he had already killed three people prior, composting them, so after the attack I'm okay that he didn't feel the need to up and leave town to hide.