Its a Troma film...that explains a lot.
And the cheese rolls ever onward, Andrew...how do you do it?
I don't know of any Troma connection with this one. It does have a convoluted pedigree, which is why there are three versions:
Raiders of the Living Dead
The film was apparently edited each time, with newly shot material added each time, until we finally got to "Raiders of the Living Dead" - a much different movie than the original script.