I'm constantly running low on nightmare fuel. Probably because I don't play the whole game insane and I make camp above ground like a scrub. Anyway, wanted to know if there's any smart ways to farm the fuel. Best things I've found are:
- Nightmare amulet, though they can overwhelm you pretty fast if you aren't quick
- Nightmare cycle in ruins near fissures, though this has a long delay between cycles
- Shadow Splumonkeys, but I don't know how to aggro less than a dozen at a time
Any ideas that I haven't listed here? Or refinements on the ideas that I have listed?