Here's everything you need to know about when and where to fight foes in the new Diablo 4 Boss Ladder ... Open World drops in Helltides Shard of Agony or Stygian Stone Grigoire 12 Living Steel ...

The Echo of Duriel can be found in Kehjistan in Diablo 4, within the Gaping Crevasse dungeon south of Gea Kul. To summon this Uber Boss, you will need Shard of Agony (dropped by Grigoire the ...