These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Jerkass Woobie: Dammers' work as undercover agent among cultist caused him to sustain multiple massive mutilations and driven to the brink of insanity. In the extended version it's also revealed he had been a victim of Charles Manson and his "Family" in 1969.
It gets even squickier when you realize Jackson would later work with the actor's son. There may have been some awkward moments there.
The Producer Thinks of Everything: If you decide to, for whatever reason, count how many shots that Patricia uses in the climax of the film, you'd count to 12, most likely the amount of shots the shotgun holds.