You have to collect 9 items in various locations across the Domain of Kourna. And Gorrik will give you 1 more item after collecting the other nine

Optimal route

Objectives

Optimal route

• 

  Item

  #4. Flask of Churning Liquid

  Just south of

  Arkjok Farmlands Vista

  , near some big rocks

  
• 

  Item

  #6. Calcified Megalodon Fin

  East of the

  Arkjok Farmlands Vista

  , at the foot of a Joko statue, where 3 villagers stand

  
• 

  Item

  #5. 210 Proof Rotgut

  Head north from #6, in a small stable by some roosters

  
• 

  Item

  #3. Completely Legal Performance-Enhancing Serum

  This secret cache is south of

  Idol of the Choya

  , near the water, in the bushes

  
• 

  Item

  #2. Dragon Protein

  This secret cache is in another broken structure near #1

  
• 

  Item

  #1. Unlabeled Bottle of Bubbling Liquid

  This secret cache is in a broken structure just south of

  Barbellate Crater

  (under the "c" in Kodonur Crossing on the map).

  
• 

  Item

  #9. Untested Speed Serum

  This secret cache is right by

  Dejarin Ruins

  , north of

  Apizmic Grounds Waypoint

  
• 

  Item

  #7. Bottle of Dark Smoke

  This secret cache is just east of

  Apizmic Grounds Waypoint

  
• 

  Item

  #8. Lightning in a Bottle

  This secret cache is southeast of

  Apizmic Grounds Waypoint

  (under the "u" in Bitterfly Bayou on the map)

  
• Chat

  Full Recovery

  Return to Gorrik with all of the beetle medicine