:O No really if you can't beat him PM me your account/pass and I'll do it for you.
Rofl I'd be shocked if anyone trusted me, whats the worst I could do, delete your chars? Why would I do that. I held over 500k a few times in the sell forum :O.
Bump curses to 12...other attributes can be wherever.
Load only the following skills in your first 5 slots....leave last three blank
1. Malaise
2. Blood Ritual
3. Blood of the Master
4. Defile Flesh
5. Insidious parasite.
Remove your weapon so you dont accidentally use it.
Go in to fight your doppleganger...up close. His melee is nowhere as good as his bow. Cast only Insidious Parasite...as often as possible.
Just bring lots of sacrifice skills, but don't use them. He will kill himself. Maybe bring a damage spell or two if he still has too much life. Also bring Scourge Sacrifice if you have it to make him take even more damage.
1) Insidious Parasite+Retribution+Life attunement. He'll use life attunement, lowering his damage to the point that you can face him with only the insidious parasite up. Retribution will speed it up a bit. Just recast the insidious parasite, stand still and lethim kill himself on you.
2) Spells that sacrifice health to do nothing useful. Preferably use Awaken the blood as well, he'll be sure to use it which will make him sacrifice 50% more.
3) Use piles of monk enchantments that don't benefit him (retribution should be one of these, you won't bother attacking him anyway...). Give him Rend Enchantments. Pre load 5 or 6 enchantments before facing him, activate last seal. Giggle as he strips all your enchantments, half killing himself. Apply enchantments again. Giggle as he kills himself stripping them off again.
I have tried everything everyone suggested but seem to have none of these spells and enchantments. I have had other people try and beat him and they could not. I gusee I will quit playing the game and uninstall it. It's a shame for spending a month to get to level 20.
You need to some backtracking and pick up some skills you missed, although in reality its very easy you just need to think outside the box.
If your missing so many Necro spells (which you really should get) you can always jack up healing and smiting and go the healing breeze + retribution and load NOTHING else on your bar, cast Retribution on yourself, apply healing breeze whenever it blinks and he will kill himself.