I thought it would be fun to try some of the tactical challenges in SCS. I think that may have been a mistake, and worst of all, it wasn't like I didn't have some warning.
I initially turned on the "slightly" more difficult Irenicus' Dungeon option and couldn't get my party through it. The lack of sleep was what did it - the duergar are a lot tougher than goblins, but it would have been doable with even a single additional rest. So, needing to adjust the install anyway, I pulled that one, but let many of the others in. Then, I got to the shade lord in the Umar Hills temple area.
Now, this was partly exacerbated by the option to remove unrealistically placed ammo option, but there were no sunstone bullets in the temple. Which left the party trying to focus on the altar while getting pounded like a cheap steak by Patric and the shade lord. The party bailed back to Athkatla, now with Mazzy in the party, to look for sunstone bullets. Not a single store carries them it seems. So, I had to console those in, as there was no way to approach this with that altar operational.
The party returned to the temple area, cleared out the rest of the shadows, but couldn't get Patric or the shade lord before they were getting beaten into rough shape. So once more, back to Umar Hills to rest and return. The next trip allowed them to take out Patric - and this is where it gets frustrating.
The only thing the party had that made a dent in this clown was Holy Smite, and indeed, they managed to get him down a ways - but the level drains meant that they were losing two per round instead of one. He was also saving against Hold Undead nearly every time as well. Note that this was AFTER Imoen had cast Greater Malison and Maeri had cast Doom. Sirene had also cast Protection from Evil on every party member prior to entering the altar area, but that looks to have been a total waste of time.
After a few attempts, they got him to near death, but ran out of spells. The best sword the party has, the Sword of Chaos, wasn't touching him. Imoen Breeched him TWICE, which should have taken down any PfMW buffs. On the other hand, his nearly limitless supply of death spells and level drains were definitely touching the party.
In a fit of frustration, I put the game in story mode just to end the encounter, which I now regret, but jeez, Louise, how are you supposed to take out this guy with this option installed?