For straight weirdness - there's always Grollfried, Befouled By Flies, Ahulabrum, Terror Noxpheratur and everything that guy does....Kaostorroth is really good too.
Not sure what 'battle style' means - but maybe those guys in the Netherlands behind Vaal, Ultima Thule, Ravensang, Blood Tyrant etc could be up your alley.
Recently grabbed the reissue of The Black - Black Blood demo on LP. Forgot how good this was. Aswell as tapes from Regnum Tenebrarum, Vampirska, Krolok and Bezperit which are all keepers. Another recent purchase I should mention is Attic Presence - The Unwelcomed One LP, usually the guy is responsible for minimal dungeon synth/ambient but I have returned to this one a lot.