Requirements: Tanning so that you can skin a jaguar corpse
Find a Jaguar Knight and ASK JAGUAR RANKS.
Find a wild jaguar, kill it, and skin it for its pelt.
Return to the Jaguar Knight and GIVE PELT JAGUAR.
Go to the entrance of Nazca and start killing Chimu one at a time.
When they get to DYING, CONFIG NOAUTOATTACK or stop casting spells until they are subdued.
It helps to wary down or remove some, but not all, weapons so you don't do as much damage.
Be careful not to kill the Chimu warriors you have already subdued, they will have the same keyword.
It might be better to deliver them one at a time to avoid this issue.
Once you have subdued 5 Chimu warriors, return to the Jaguar Knight.
ASK JAGUAR PRISONER to turn in each beaten Chimu warrior.
Upon giving the fifth Chimu prisoner to the knight, you join the ranks and are rewarded.
Rewards include: