Well. Interesting. I guess we can classify that as a "Historical Curiosity."
Certainly an early example of the "let's kill everyone just cuz we can" sub-genre.....
And you could just tell that Curtis loved being able to use all the copious blood he couldn't show on TV.
"No more Standards and Practices! Bring on the gore!"
(I'm almost surprised he didn't try to squeeze in some Hammer-style nudity while he was at it!)