I didn't see this posted anywhere here, so I thought I'd throw out a suggestion. I just took this guy down. Got blinded before I ever got close to him. He is marked on the map, so I just used my map to keep repositioning myself. Cleric merc kept me healed fine. It was a little slow of a fight, but steady. Had no trouble repositioning myself between him and the broken wall behind him. Just kept edging up to him till I started making contact with my swings.
Just a suggestion.

Collar of Tavuel Xakreum
Crown of the Itraer Vius
Fist of Acrylia
Glowing Orb of Luclinite
Iceshatter
Itraer Insignia
Light Woodsman's Blade
Luclinite
Ribcracker
Shaded boots
Shadow Flame Claws
Shadow Flame staff
Signet of Fiel'Tian
Spell: Blessing of Aegolism
Sunbeam Staff
Vex xi Vius
Vius short sword
Wito xi Tetoracu