how to get past duriel

[Hammerskjold]

Since you have Blood Golem, you already have Clay golem right, you can use Gumby to try to slow Duriel down.

If that doesn't work for you, do you have anything in the Curse tree? Amp Damage, Iron Maiden, or Decrepify comes to mind. If you don't have any of those, you might be able to shop some wands (or find some shrunken heads) that might have those skill.

Unless you're playing a variant that forbids any Cursing or something.