Blessed Are The Sick heavier, some slower parts than Altars. Great album overall.
Covenant is good but not quite as memorable as the previous two albums. Best song on this album is Angel Of Disease classic old song (First song of Abominations Of Desolation) re-recorded for this album.
Abominations Of Desolation debut album recorded in May 1986 has new ideas ahead of their time. Raw sound, not quite as polished as Altars Of Madness but nevertheless classic.