Calling all 'undead' movie experts; I've almost given up on this??!
Question: I'm trying to find this movie about an ugly and mindless undead creature and which was part of an experiment to make it indestructable and the creature escapes and starts bloodily and gorily killing peoples and is difficulty to destroy cause it has the ability to regenerate itself and everyone in the movie is stupid clueless about this thing except for this priest who seems to be the only one who knows anything about this unstoppable thing and he tries to stop it.
Answers: I'm trying to find this movie about an ugly and mindless undead creature and which was part of an experiment to make it indestructable and the creature escapes and starts bloodily and gorily killing peoples and is difficulty to destroy cause it has the ability to regenerate itself and everyone in the movie is stupid clueless about this thing except for this priest who seems to be the only one who knows anything about this unstoppable thing and he tries to stop it.
...despite the lack of punctuation in your description (...whew!!! What a read!!!), I was actually able to key in on what you might be looking for; based upon what you have described, it sounds very much like you're thinking of the extremely gory early '80's Euro-horror shocker, entitled "Absurd", which was released in the U.S., under the alternate titles "Anthropophagus 2", "Monster Hunter" and "Grim Reaper 2"...
was it the watcher by dean koontz? good book, dumb movie=)