I had a very similar experience fighting soulmancer before the last reset.
Even with the overpowered physical facets giving elemental absob and damage reduction and gear from hours of "free crafting" with 99% vendor prices reduced it was impossible to do anything.
My zealer was totally 'broken', he could walk up to diablo or samhain(depending on his mods) and straight-up zeal them to death.
Despite all this there was no chance surviving against soulmancer.
Empty wrote:
So FYI for future people, maybe bliz sorce or someone with distance just hit him once you enter portal and then die, rejoin and hit and keep doing it.
With 4~5 players on ranged chars, keeping him from healing and abusing the tp/rejoining there is a very lame way of killing him.