Deathspell Omega is a great French Occult Black Metal Band dating back from the end of the 90's that released this album (Infernal Battles) in 2000.
Well, here we have a masterpiece, no doubts, imagine the typical 80's Black Metal kind of sound (Celtic Frost, Hellhammer, Bathory, and so on...) then, add some rawer, melancholic parts in the 90's vein (Judas Iscariot, Mutiilation, Darkthrone, and so on...), and you've got a good idea of what this album sounds like.
The recording, however, isn't very good, and sometimes the sound turns into a "harsh-mass-of-sound." That's why it lost the 6 points, but it's nothing that's really harmful, you can usually understand well the riffs, the drumming is ok, the vocals are pretty fine (they are in the 90's raw black metal way), but, forget the bass (you really can't hear it).
A highly-recommended album for Raw Black Metal fans, in all of it ways (80's/90's), but if you're looking for cleanly recorded and technical black metal, STAY AWAY FROM THIS ALBUM!