Though there are a few dungeons that could have occupied this spot, Light’s Watch is one of the more surprising beneficiaries of the recent updates. Its design isn’t necessarily ideal for Nightmare Dungeon farming, but its incredibly high enemy density makes it one of the best farms for pure XP in the game.
Honestly, it’s also a pretty decent source for Glyph XP once you get past the awkward first half of the dungeon and into the far more linear back half. If you’ve gotten used to breezing past this dungeon in the past, give it a second look now. It’s available as early as World Tier 3, and it’s really fantastic.,
Worst Diablo 4 Season 2 Nightmare Dungeons
The best Nightmare Dungeons in Diablo 4 will not always be available to you. You will sometimes have to run “lesser” Dungeons in order to acquire Nightmare Sigils and various other resources. The good news is that most Nightmare Dungeons offer something that is worth your time. At worst, you’ll run through them for the resources needed to unlock more efficient dungeons.
However, the worst Nightmare Dungeons suffer from a variety of issues that make them suboptimal for XP farming, Glyph XP farming, and resource farming. If you happen to get a Sigil for any of these dungeons, you’re better off just dusting it:
Endless Gates
Leviathan’s Maw