Now you've got me curious.
I recently watched "Just Before Dawn," another in the long line of "Friday the 13th" inspired backwoods horror. I won't saw the ending was a twist but it was one of the more unique final deaths I've seen.
I've never heard of Just Before Dawn, but it is on youtube, so it's now on my list. I'll try to give thoughts after I watch it.
Great slashers that I missed in the 80's but watched for the first time in the last 10 years or so were The Burning(1981) and The Prowler(1981).