Beforehand, I lured a Frost Titan at the entrance (A white Minotaur Lord, with 1130 HP at level 28, can kill 3 Legion Foresters without losing 1/4 of its HP, 3 shots a Brown Bear) in case.
I meet Mannimarco freezes me and started blabbering about his plans and whatknot.
So Mannimarco has Spell Absorption, Resist Paralysis, Reflect Damage and Spell, 700 HP, a Daedric Dagger, and 3 spells that can kill me immediately.
http://imageshack.us/photo/my-images/689/steamqm.jpg/
The battle begins. He summons 3 undead in one spell, namely a Gloom Wraith, a Lich and a Spectral Reaver (a marauder that is a ghost that has Reflect Spell and Damage). So I had 3 tricks up my sleeve:
A.) Sanguine Rose and Skull of Corruption
Well, it does me no good. The daedra I summon gets slaughtered moments after summoned. I can't Silence Mannimarco, because most of the time it gets reflected back at me, and die because I can't stay invisible. The clone in SKull of Corruption does not even attack!
At some point in time, a Spectral Reaver was able to bypass the claws that Mannimarco summoned and attack him. I don't know how, but Mannimarco lost a lot of HP. I don't know how, but Mannimarco lost 400 HP. Probably because he uses area effect spells, and it hit the Reaver which has Reflect Spell.
B.) Use Mannimarco's Summons against him.
A simple 25 pt, 1 sec Command Humanoid spell is sufficient to make Mannimarco attack his own summon. He always attacks the Spectral Reaver, while the other 2 just sit there. But that's good, since the Reaver can do some major damage. Worked for a while, up to the point where Mannimarco casts a very strong healing spell. He casts it whenever his HP goes below 250. The Reaver isn't strong enough to kill Mannimarco, and I thought I was stuck.
C.) Drown Mannimarco.
I found a way of getting out the claws! Now I'm in the water, waiting for Mannimarco to fall in. It will happen eventually, since saw the summons getting past that claw, and the Spectral Reaver getting in. He fell, and no spells to worry me this time! So we went to a small underwater passage, I cast a 100 second Water Breathing spell and waited while blocking.
http://imageshack.us/photo/my-images/266/tdrown.jpg/
Waited and waited and waited. He's immune to drowning! By the Nine! We were there in the water for 15 minutes!
D.) Hope that the remaining undead in the dungeon is enough to kill Mannimarco, then the Frost Tiitan.
Only thing I could do now before I give up on this quest. I saw 2 Spectral Reavers outside. Once again, Command Humanoid on Mannimarco so that everyone else would attack him. He fought hard, but the 2 Reavers won! So happy at that time (until now actually).
http://imageshack.us/photo/my-images/259/mannimarcokilled.jpg/
I didn't deserve the credit though.
Actually, I still had a plan after this one, which was
E.) Lead Mannimarco to the strongest in Cyrodiil (not in the cities though) like to Umbra, Lord Volmyr, etc....
Anyways that's all, just wanted to share, will upload pics as soon as Imageshack stops messing up.