Well, I changed my mind about quitting my Necro. I decided that he needed to be seriously tested at least
once in his journey.
So I fought my way down to Andariel. I found the stairs to each level reasonably quickly, leaving large portions of the map unexplored.
After clearing the first room of level 4, I set the players to 3 (I had had them on 8 up to this point). I had my inventory practically completely full of potions, although I did have a head and wand that gave me +4 to Clay Golem (I also had a grand charm with cold damage on it). First, I tried killing her with Poison Dagger. Turns out, she's more resistant to Poison Dagger than I expected. I dealt nothing to her! My main attack was a no-go.
After running out of potions (I should have retreated earlier; stupid me) I tried using Clay Golem + Iron Maiden. I used a few mana potions doing this, but she wasn't damaging herself fast enough. She also kept using her spray attack instead of her melee.
I decided I could do it but needed loads of mana potions to pull it off, so I set off to clear the Catacombs. Boss after boss and champion after champion fell and yet
I was getting no mana! When my inventory was full of potions again, I had almost all spaces filled by health and rejuvination and only 2 with mana!
Nasty thoughts crept into my head at this point. Might I lose the game here? I imagined the likely scenario: I would fight her, run out of potions, ascend the stairs with no life to gather my nerves for death, then take the final plunge into Andariel's arms.
I forced these morbid thoughts out of my head and sat down to think. I had to make the best of the situation. I realized that with low mana and high health (in potions), I couldn't be casting my golem over and over again. I might not even have enough to keep her poisoned constantly. I realized that
I would have to be the golem in this situation, absorbing her hits myself while she had Iron Maiden cast on her! A frightening proposition.
I summoned my golem, waited for full mana, and stepped back down to try it. It was working! The combination of Iron Maiden + Poison Dagger brought her health down quickly, but I sucked up many health potions. I had to crawl back up the stairs when she had lost 2/3rds of her health.
I rushed back (the clock was ticking) and cleared the Catacombs level 1, and found a well! However, it was very far away, so if I ran out of potions, she might be able to heal herself faster than I deal damage if I have to take trips to that well. I had no more areas to clear. I returned to the steps to level 4 with 1/3rd of my inventory full of potions and full health (thanks to the well).
The two forces clashed. Andariel sprayed poison. I resummoned my golems. (I had a better ratio of mana potions than last time, so I could afford them) Andariel stabbed and writhed in pain as her own blows were returned to her. I stabbed her back, boiling with frustration as the she quickly brushed away the chilling and poisoning effects of the dagger.
My belt emptied. My inventory emptied. But she was nearly dead! Only a sliver of health left on her! We both ran circles around my golem as I pondered my next move. My golem pounded her several times, and then a ray of hope came to me:
could my golem finish her off? I kept running and running, and she ignored my golem, intent on her primary prey who was out of health and potions. She misjudged the might of the Clay Golem; he landed a powerful hit, she screamed, and a pillar of fire erupted from the ground! DestroyingAngel laughed exuberantly and his golem, err, made happy golem noises (he had finished her off, after all!) as the floor shook!
I cleared the Throne area, retrieved two health potions for my trouble, and stepped through the Portal, finally deigning to speak with Warriv about traveling to Lut Golein (I certainly didn't speak to him during the journey).
[highlight]DestroyingAngel, level 20 Daggermancer at the Lut Golein waypoint, Sewers(most likely) next[/highlight]
I think I might just buy a tome at Drognan and hope that I find an ID tome in Nightmare so I can stop feeling guilty every time I look in my inventory. :\
That was one of the most intense fights I've ever had in Diablo II. I think I'll be fighting Duriel on /p1.

I also hope you enjoyed my write-up! Was it too detailed and boring?