"Zombie/possession slant"
a strongly redeeming factor
It counts for something, as does the gaffer tape self-medication, which was a glimmer of humour in an otherwise pretty grim affair.
"gaffer tape self-medication"
Eating it, or re-attaching body parts?
The latter. Broken bones and a partial disembowelling (I said it was gory), all treated with a roll of the silver. Quite the 70s disco get-up by the end.
Sounds very Dario Argento.
That's being very generous. More Lucio Fulci: workmanlike, sparky in places, but derivative.
I don't think I've made it past ~10-minutes of a Dario Argento. ISTR trying a couple, and wrote him off after that.