Learn how to burn down the Ancient Lich Spawn!
1) Sampire. I run the following sub-optimal template:
Bush 106
Chiv 75
Necro 99
Resist 101
Swords 115
Tactics 115
Anat 109
You must have resist, or you will die.
2) Armor. You need to be all 70s in vamp form, so pile on the Fire Resist. Afterwards, you're adding dexterity and stamina before everything else. Then, mana increase and regen. Finally, pile on the DI and the SSI. You need to be swinging once a second, or as close to that as the game allows.
3) Weapon. I run this suboptimal weapon that cost me nothing to imbue, because it spawned with with darn near everything on it:
Radiant Scimitar
Hit Stamina Leech 14% (really needs to be higher)
Undead Slayer
Hit Mana Leech 50%
SSI 25%
DI 45%
Physical 100% (Should be fire)
4) Macros. Set up this:
SelectNext Mobile
AttackSelectedTarget
Put it on a hotkey that you can spam while running.
Technique:
Tier I & II: Run like a madman, spamming your hotkey. Get everything aggroed, then stand and whirlwind through it. Consecrate weapon is your friend if you're not 100% fire.
Tier III: *Carefully* run like a madman, aggroing the Rotting Corpses. Get as many as you conveniently can - I like 5-8. Then, Honor a Skeletal Lich. Dance around until you engage the Skele Lich with a group of angry RCs next to you. Spam whirlwind. If you whiff more than once, run and heal. You can have as many RCs as you want on you, but only one Skele Lich. More than one and the pain spike/poison strike/strangle/evil omen/flamestrikes/Deadly Poison will end you.
Renowned: Just EoO and bash him. Get up from the keyboard and get a soda if you want, or take a 15 second snooze. That's all you'll need to kill him.
I've been dying a lot, but that's because I tend to charge in and damn the torpedoes. With only a small amount of caution on Tier III, I never dirt nap.
Enjoy.