Did someone managed to beat Grurn? (http://www.uesp.net/wiki/Morrowind:Siege_at_Firemoth_%28quest%29)
It has an insane regeneration health rate, and it's bugged. Once it doesn't have anymore magicka, it attacks you with a staff, never touching nor dealing damage, but even with that, i couldn't beat it with daedric weapon...
I'm not as powerfull as you. Level 25 with 80 in strength and 76 in blade. I attacked with 1 daedric dagger, Glass Longsword and ebony long sword, all the 3 items went to 50 in resistance as i was clicking like a crazy person on my mouse.... I've tried with special moves too without success.
I'll try the patch, thanks for posting it.
You should probably use an enchanted sword and spells against him.
Hum, unfortunately i don't have save before i meet it :(
I'll try to come back stronger and defeat it later.
In a mod like Morroblivion you should always keep multiple saves and save often. Saves are known to get corrupted sometimes even in base Oblivion.
Just did the quest and beat Grurn. He is an extremely tough boss and almost no spells or poisons showed any effect. So he cant be paralyzed with spells or potions either. However if you hit him with the Glass Jinkblade he gets paralyzed for 10 seconds making it quite easy to kill him. Sadly only Hjondir survived until I figured that out ;)
Grurn is supposed to be
Grurn is supposed to be really tough, your followers aren't expected to survive. However I did leave one wrong spell in there, this fixes that. I also removed his staff but he will only use spells now, the original used a sword but Oblivion Liches can't use them.
To resolve this I'll add skeleton animations to the Morroblivion Lich in this file. They will now use their swords. The other possibility would be to have them use the entire Skeleton skeleton with their animations and get a casting animation from somwhere else. Morrowind Liches where more like skeletons anyway.
It probably only works if you reload a savegame from before you first met him. Also what level are you? My lvl 48 character was able to deafeat him in less than a minute, at least with this file, this official mod came out after the game so it was aimed at higher levels.
Note that this is somewhat experimental and you don't have to use the animation files, maybe you even shouldn't. But it seems to work fine.