WARNING!!! MAJOR SPOILER!!!
I just completed the game

("normal" difficulty setting), and I was wondering if anyone else in this forum has completed the game (SoA). I'd like some feedback on how you defeated Irenicus in Hell.
Actually I think the battle should've been harder on the "normal" difficulty setting, I defeated him easily (only lost 2 of my wiards). I didn't cast any magical protections at all only the sort of pretection you get from magical armor, weapons etc. (Protection from fire, charm and stuff like that).
Before I placed the last Tear of Bhaal in the eye on the wall, I rearranged my spells (removed all the defensive spells like spell turning, and replaced them with offencive spells like breach, secret word, pierce magic and remove magic), and then I slept in Hell

to "activate" them.
The spells that can remove a wizards protection are very usefull, especially when you're in Hell with Irenicus because he casts a bunch of protective spells.
At first Irenicus summons about five demons. I took them down easily only using my character (the one I created). Then I changed into a slayer just like Irenicus did in the beginning of the fight, used my wizards to remove his protective spells and attacked him with my slayer. Not even a minute whent by before he was dead...
How did you deal with him?
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...and he walked the earth for centuries, slaying creaturs of the underworld...
-Charlander