The Pit of the Faithless took 9 trips to clear up (going back to Ghoul town to rest).
I realized that my F/M can solo any number of Gauths by:
Prot. from Electricity / Spell Immunity: Necromancy / Chaotic Commands
... then, just when I was merrily slaughtering Gauths, a Beholder dashes on to join the fray: it dispels all my protections and charms charname!! (Damn you, SCS!! *shakes fist* )
I throw my entire party to the fray to save charname, letting lose every spell & summon (Kittix & Berserker) as fodder while Jan dashes forward to cast Invisibility 10' near charname, saving him at the last second from certain death!
We escape with our life hanging by a sliver.
... later on I find the second rift device after a tough fight and return to rest before facing the Unseeing Eye -- or so I thought. The Tyrant is waiting around the corner and Abi Dalzim-s my party promptly: Keldorn & Aerie dead in round one!
I hit the thing with the Rift Device and attack it with everything. One more Abi Dalzim kills Jaheira, who was playing decoy. Charname brings down the Beholder with a Fireball. Booyah!
Beholders are very scary.
The satisfaction to beat them in no-reload by good planning (and some luck) is very very gratifying.