Satanicum Tenebrae - Til Helvete (1994)

Creepy lo-fi dark ambient from the man behind Mütiilation, also known as the man who managed to be too fucked up for LLN. Creepy organ-keyboards, sickly rasps, and ghostly moans.

Track listing:
1. The Candlelight
2. Natten
3. Memories of Fear and Grief
4. Til Helvete
5. The Tombstone
6. La Lune Qui Pleure

The black curtains open on a depressive autumn

More along these lines:

Aghast - Hexerei im
Zwielicht der Finsternis (1995)

Accurst -
Fragments of a Nightmare (2004)

Belkètre - Ambre Zuèrkl Vuorhdrévarvtre (1996)

Related:
Brenoritvrezorkre - Vèrmyaprèb (1995), Nèvgzérya (1995), + Vasagraèbe éakr vatrè brenoritvrezorkre (1996)

One of the finest pure black metal releases from France's mysterious Légions Noires, who I describe in the link above as "a French black metal/dark ambient horde who, during the mid-90s, released countless limited cassette demos through a seemingly endless number of incestuous, perplexingly named bands and projects." Ambre Zuèrkl Vuorhdrévarvtre is an enticingly incomprehensible, distorted mass of dissonant riffs, tape hiss, and muffled drums, over top of which high-pitched rasps echo, along with the occasional ripping solo.

Track listing:
1. Voarmtre Zuèrkl Vuorhdrévarvtre
2. Demzreyavbtre Belketraya
3. Marbatreéèpreb
4. Aapr Dgyarveurtre
5. Brearmdreb
6. Damae, Dzlebaeryavtreéèpreb
7. Verhzleyavbtreleambreb
8. Eepreb, Vagezaryavtre Zuèrkl
9. Goebtrevoryalbe
10. Emvandreoatr

Dark promise

Brenoritvrezorkre - Vèrmyaprèb (1995), Nèvgzérya (1995), + Vasagraèbe éakr vatrè brenoritvrezorkre (1996)

Three psychotic demos by Brenoritvrezorkre, one of the finest projects associated with Les Légions Noires, a French black metal/dark ambient horde who, during the mid-90s, released countless limited cassette demos through a seemingly endless number of incestuous, perplexingly named bands and projects. Supremely deranged black metal full of knotty, dissonant guitars, ghostly rasps and howls, and almost completely indecipherable, off-kilter drums. As should be expected, it's all totally blown-out and lo-fi to the point of absurdity. To the ears of black metal nerds, these demos are invaluable gifts from the Dark Lord Himself; to everyone else's ears, they are utter dogshit.

Track listing:
-Vèrmyaprèb-
1. Eápr Govépèrv
2. Borarp!
3. Voarmérpébre Uatr Vèrmyapre
4. Tsaévarya Vèrmyaprèb
5. Favoapr Uatr Zuflebre Oatr Bouarvtre Blehrurb
6. Eamkl Uatre Bervétrèmdre...
-Nèvgzérya-
1. Voarmtre Zuèrkl Ndearbe
2. Tsaévarya Zurgtapre
3. Ezlèybdrèb Zuèrkl Bèrvétrèmdre
4. Morvbtre Urvdrèm Dlèfme
5. Abgvatrèb
6. Eamkl Eèpreb Dzélyambre
7. Abgzvoryatre Urvdrèm Dlèfme
8. Abgvatrèb
9. Nèvgzérya
-Vasagraèbe éakr vatrè brenoritvrezorkre-
1. Aaprab Vergz Varbadre
2. Eakre Uatre Zurgtapre
3. Berv Tre Mve
4. Vermyapre Zuerkle Uatre
5. Kloarbe Vurtrue Zuerkle Goebtre
6. Uatr Borvuatre Zuerkle Droer

I died from a vampiric grief