If you're a Barbarian or Iksar, see
https://wiki.project1999.com/Hunting_in_Grobb. Each guard drops a sword worth 10p or so (plus possibly a 1p shield, a 1p neck, and/or FS or gems), and an appropriately-leveled Shaman can not only farm it, they can get XP while doing so.
Evil shaman can probably do Barbarian/Dwarf/Elf/Human guards instead, but I don't know the details (the wiki has an evil shaman guide that's really good though).