[4] In 1996, the band recorded the Vulcano cover "Witches Sabbat" with guest vocalist Goat (ex-Satanized) for the second Headbangers Against Disco split EP which also featured Usurper (de) and Unpure, and the song "Hellish Blasphemy" for the Gummo soundtrack; the latter was re-recorded for the band's second album, Devil's Force, which featured Zweetsloot and Nödtveidt again.

Eduardo Rivadavia of AllMusic claimed that "While many of the Norwegian black metal bands of the early 1990s were taking themselves so seriously that heinous acts of murder, church burnings, and the like wound up stealing more headlines than their actual music, Sweden's Nifelheim were shrewdly still treating the genre's Satanic silliness with the appropriate tongue-in-cheek tone.

On the surface, this was illustrated by their cartoonish album covers and traditional black metal 'uniform,' consisting of the necessary leather and spikes, bullet belts, pentagrams, and inverted crucifixes.

[7] In a 2008 interview with Sweden Rock magazine, Tyrant was quoted as making derogatory remarks about deceased Metallica bassist Cliff Burton as well as deceased Pantera guitarist Dimebag Darrell Abbott; he stated "I laughed and pissed on a photo of him", and "Too bad Phil Anselmo didn't die too; that was probably the only time I wished Pantera had actually played", about Burton and Abbott, respectively.

[8] In a 2010 interview published in Metalion's Slayer (de) fanzine, Tyrant stated that "this 'Dimebag/Burton' fuss... was spammed out as some 'statement' on the internet", and that it disturbed him "more then [sic] ever".