I thought the cover might be some sort of strange homage to the art on Holocaust's Heavy Metal Mania EP, but that's a pretty big stretch my brain was making. Upon actual comparison, they only share the common theme of very unhappy-looking winged things getting impaled, and nothing else.
Speaking of homages, the older pics in the booklet are already great, sure--obviously, it's hard to go wrong with Possessed and Slayer shirts and a length of chain. But I was blown away to see the Prowler 7" in one of the pics. ATTACK OF METAL STRIKE YOUR CUNT !! It took me a few moments to figure out why there was a rather scantily-clad guy across the bottom of the picture, until I realized they were posing in a parody of the EP cover.
Anyway, my main reason for this post is to ask if anybody has any further information on the unlisted bonus track at the end of the disc. Let me know if you do. My own searches didn't yield info on the mystery track, but did produce this autotranslation gem:
I dunno about Bathroom's Quorthon, but Quorthon's bathroom makes me imagine the Occulta recordings stashed behind a commode somewhere, though more realistically it was probably the place where Destroyer of Worlds was conceived.