[Edit: Sadly the only video with the whole song in it got taken down. The official vieo only has bits of the song, but you can view it here.]
Last, but by no means least, ‘Jingle Hell’, by Sir Christopher Lee. Knight of the British Empire; Count Dracula; Count Dooku; Saruman; heavy metal god; and, with this song, oldest singer ever to enter the charts, if I don’t have room to honour Christopher Lee’s contrbution to dark Christmas music, I might as well pack up and go home.
You might wish to quibble at the inclusion. Is going to Hell at Christmas strictly apocalyptic? My answer: yes. Yes it bloody well is. Hell on Earth fits the description to me, and if it doesn’t for you, then, well… Christopher Lee.