use a bow and cast nature's fury in wraith form
I came back the other day to be introduced to this one hit kill monster. With enough bushido you can evasion tank no problem with a bow, the wraith form and nature's fury works as well. You can time evasion with some practice once you understand his animations.
Make sure to curse and armor ignore and you should be good. The first time I did him I died like 2 times to learn the mechanic, the next 3 times I have done him I soloed him no problem. Make sure your gear is on par with the rest of the shard as well.
If you need help, Ill be glad to show you the ropes and mechanics. There are a few more ways of dealing with mobs like him or "smart" ai but thats for an ingame class lesson sometime.