My guild was waiting on the Lich for a guildmate today to spawn and this guy killed our shaman. We decided to take his butt out. Our guildmates present were:
58 war (came at about 75%), 62 dru, 65 shm, 65 clr, 57 war, 55 war, 57 wiz, 61 necro, 65 ench, 60 pal, 52 wiz, 65 bard, 62 war, 65 clr, 65 rng, 65 war, 57 wiz, 61 dru, 65 shm, 62 wiz and a few friends 65 ench, 65 bst, and a 65 rng (yeah we know this is way overkill for Lich but hes a guildmate y'know).
Well the fight took well over 30min I would say (some think over 1 million HPs).