The Diablo 2 Resurrected Hellforge is a vital part of Act IV and it's also one of the more difficult landmarks to find. That's thanks in large part to Diablo 2's randomly generated maps, but it's also down to the River of Flames being a fairly uniform region.
However, you have to persevere. Finding the Hellforge and triggering the fight against Hephasto is mandatory for continuing on toward Pandemonium.
Diablo 2 Resurrected Hellforge — Where to Find the Hellforge
Since Diablo 2's maps are randomly generated, there's no guarantee the Hellforge location will be the same in any two games. Fortunately, unlike some areas in earlier acts, Act IV is straightforward. There's only one region adjacent to the River of Flame, and, obviously, the Hellforge isn't there.
Just keep exploring the River of Flame, and you'll run across it eventually.
Diablo 2 Resurrected Hellforge — Hephasto Fight
Once you do find it, you'll trigger a fight against Hephasto the Armorer. This demon is essentially a 2.0 version of the one you fought back in the Monastery Barracks, so you should have a decent idea what to expect.
Poison is Hephasto's only weakness, though he's also not resistant to physical attacks.
Either way, this fight should give you very little trouble. Hephasto telegraphs his attacks clearly, and you have ample time to rush in, strike, and retreat. He has no ranged attacks either. If you're a ranged class, then you can just stay a few steps ahead and launch a barrage of assaults until he's defeated.
Diablo 2 Resurrected Hellforge — Hephasto Drops
Here's what the beast leaves behind:
- Sigon's Shelter
- Arcanna's Flesh
- Cow King's Horn
You've got a difficult fight ahead once Hephasto is laid to rest. Diablo won't go down as easily, and Baal is waiting soon after that. You've still got time to adjust your classes if need be, though, and our class build guides have the best skills to focus on.