Human Barbecue is a challenge located in Scylla's Grove that requires players to find four bonfire pits and ignite them.
The bonfire pits are all located in places visited during Scylla's Grove missions, so this challenge presents quick little side objectives to those other goals. The relevant missions are:
- Professor Nakayama, I Presume? - Story mission leading to Roothill Village
- Ol' Pukey - Side mission
- The Rakk Dahlia Murder - Side mission involving Low Gut Rut
Reaching each fire pit requires traversing areas populated by savages. The fire pits are then ignited by interacting with them.