The hammerdin might come in handy for the final uber trist (crowd clearing), but against the uber bosses themselves the class won't be as effective as a char that can deal out some crushing blow.
You'll want some source of poison damage or open wounds on the zealer, to prevent duriel healing himself. As far as weapons go, try to get a heaven's light or better yet a 'Death' runeword. Both these weapons have CB, which is what you'll want. Also, I'd stick with fana for the zealer. If you can get a source of life tap (either a wand, or a pair of draculs) then it would make the task alot easier.
The main problem with duriel is his holy freeze aura slowing you down, but of the 3 first uber bosses he isn't too difficult. More often than not, he'll be right next to the portal (just up right of the 'waypoint'), so you don't really need to worry about the other monsters in the area.
Edit: Also, if you do try uber trist with these two, you might want to consider having the hammerdin sit on salvation for meph. It makes alot of difference.
You'll want some source of poison damage or open wounds on the zealer, to prevent duriel healing himself. As far as weapons go, try to get a heaven's light or better yet a 'Death' runeword. Both these weapons have CB, which is what you'll want. Also, I'd stick with fana for the zealer. If you can get a source of life tap (either a wand, or a pair of draculs) then it would make the task alot easier.
The main problem with duriel is his holy freeze aura slowing you down, but of the 3 first uber bosses he isn't too difficult. More often than not, he'll be right next to the portal (just up right of the 'waypoint'), so you don't really need to worry about the other monsters in the area.
Edit: Also, if you do try uber trist with these two, you might want to consider having the hammerdin sit on salvation for meph. It makes alot of difference.