Nightmare Dungeons (NMDs) are the backbone of Diablo 4's endgame progression. This guide ranks every dungeon and explains which Sigils to chase for maximum efficiency.

Nightmare Dungeon Basics
NMDs are instanced versions of campaign dungeons at higher difficulty. To enter:
- Acquire a Sigil from Helltide chests, Tree of Whispers, or Whispers cache
- Activate the Sigil at the Nightmare Dungeon obelisk in any town
- Defeat all enemies + the final boss to complete
Tier List: Best Nightmare Dungeons
| Tier | Dungeon | Location | Why |
|---|---|---|---|
| S | Kor Dragan Barracks | Fractured Peaks | Linear, fast clear, big boss arena |
| S | Sarat's Lair | Hawezar | Shortest dungeon, perfect for XP farming |
| A | Champion's Demise | Dry Steppes | Great loot, moderate length |
| A | Dead Man's Dredge | Hawezar | Open arena, easy boss |
| B | Hoarfrost Demise | Fractured Peaks | Long, mechanic-heavy |
| C | Collapsed Vault | Dry Steppes | Confusing layout, slow |
| D | Torn Veins | Scosglen | Long, painful, not worth running |
Best Sigil Affixes
When choosing a Sigil, prioritize these affixes:
- +XP (+20-30% XP) — top priority for leveling alts
- Elites have +X% HP, drop +Y% Gold — best for gold farming
- Monster AoE reduced — defensive affix, makes tough dungeons easier
- Traps disabled — removes a major annoyance
Sigil Affixes to Avoid
- Players have -X% Damage — never worth the time
- Resource drain on hit — destroys resource-dependent builds
- Reduced potion effectiveness — too punishing
- Chilling winds / cold damage — slows your clear speed dramatically
Optimal Farming Strategy
- Run Tier 60+ NMDs with +XP Sigils for the fastest leveling
- Run Tier 90+ NMDs with +Gold Sigils for the best gold-per-hour
- Cap at Tier 100 NMDs for Obol farming (highest drop rate)
- Save Tier 60-80 runs for leveling new characters
Common Mistakes
- Running Sigils below your max cleared tier (XP scales with tier)
- Ignoring the backtracking Sigil affix (you may need to leave and re-enter)
- Salvaging Sigils before checking the dungeon name — some are much better