Here's a somewhat long story of my Uber run experience. It's somewhat of a nice read for those who haven't done them yet or anyone who likes to read HC experiences.
So today myself and two friends finished our Uber paladin builds, which added up to two smiters, and a hammerdin for crowd control. My smiter would provide max fanatacism, the other smiter would have max Salvation, and the hammerdin would provide extra damage with Concentration. So at about 2 AM we decided (out of no where) to do an Uber run. We prebuffed with Treachery for DR (what a waste of time, we only did it once), and had assistance from Cynical_BO with some nice BO and shout, thanks again man. So we went ahead and cubed the first three keys and Duriel's "Forgotten Sands" portal appeared. We all headed through, on somewhat of an adrenaline rush, and almost instantly came in contact with Duriel. We jumped right on the smiting, and there were no other creatures around so the Hammerdin also setup and unleashed his fury, and within a few seconds Duriel was dead. We picked up the body part and ran back to town, where we quickly cubed Izzy's Furnace portal.
We had a small conversation on what to do if there were Mages around (since they cast IM), and quickly ran into the portal before the BO wore off. We battled through some random Act 4 mobs, and some you would see in those red portals in Act 5 (Abaddon, etc). Luckily we didn't come across any Mages, and when we got close Izzy tele'd right to us which made things rather easy, he was dead in about 30 seconds. We snatched the next body part and ran back to town for BO, and then headed into Lilith's lair.
We heard the stories of Lilith dealing incredible poison and physical damage, but I'd have to say the Hell Temptress with Amp and those red bone spirits almost took me out once, first full rejuvination of the run. Sadly, many elite and champions groups of Lancers, Archers, and Temptresses spawned, and as our Hammderin was clearing out the Temptresses, a group of elite Lancers ran at him. FE + Cursed + Extra Strong + Hammers already in flight = death. We had to stop for a few minutes and kill everything off in the room, then loot him. We only had the two smiters left, but decided that we had come too far to stop, so onward we went. We got to Lilith rather quickly after that, and my life jumped up and down with Lifetap and her massive poison damage. Regardless, she fell within 30 seconds, and no potions were used. We headed back to town, called for our last BO/shout, and cubed the three body parts to created the Uber Tristam portal.
We entered the portal and popped out to the right of the town's center, and luckily there was no one around, so we decided to hug the walls and make our way around in a counter clockwise motion. If you were to say that the highest corner in Tristam is 12, at about 5 a few dozen of random skelteons came up from the ground, and a Lightning Enchanted Mephisto walked over. Sadly enough he is the most feared Uber, and he died in less than 30 seconds. His little minions stayed around though, so we ran backwards along the wall and at about 8 we were surrounded by those limbs that rip out of the ground in the Worldstone Charmber. Baal ran over, and right behind him was Diablo, and it was on. I jumped on Baal, the other smiter on Diablo, but we were quickly surrounded by every minion you could think of. Pit Lords, Skeletons of all kinds left over from Meph, Blood Mages, etc. As with Lilith, my health jumped up and down because of Life Tap, but I had to use one full rejuvination in order to replenish my mana. About 45 seconds into the battle Baal fell, and Diablo did the same shortly after, and then came the real challenge! Dodge and weave through the dozens of minions to collect the standard of heroes items and a unique large charm, being the Hellfire torch. I had to use a full rejuvination as I was running out of the crowd toward the exit, and it was only the third one I used through out the whole Uber experience.
We were all ecstatic, even though our first torch was an Amazon torch, it was still a torch, and we got through it all with two smiters and suffered a minor death to a mistake, but the Hammerdin will be back up and ready for Ubers in a few days. We were all quite shocked as to how fast and rather easy it was, and about an hour later we decided that we'd do ANOTHER run with just our two smiters. I'll spare you guys another essay, but I'll give you a quick summary. Duriel was and is by far the easiest. Walk through the portal and go up, he's there and it's over in less than 30 seconds. Izzy was next and about three steps in we met a few Death Mages (they cast IM!) so the Hammerdin who was sitting in the game with a Barbarian as an emergency looter brought in his Sorceress and tele'd down to Izzy (easily, I might add) and he went down like the rest. We went back to our normal routine with Lilith, and she went down easily, but this time we didn't come across as many elites/champions. The Ubers were also the same, we did the same counter-clockwise walk and got Meph first, then Baal, then Diablo. We ended up with another Amazon torch and I used a total of 4 full rejuvinations. All and all, we didn't end up with the most popular charms, but the experience of the whole thing balanced it out. So is Uber's do-able in Hardcore, of course, if you have the right funds and group you can take them down easily. I hope this helps some people, and entertains some as well.
Good luck and enjoy.