"Although I did ask Oveli to test you, I honestly can't trust you yet. Oveli has a soft touch and can't make others do difficult things. There are a species called Rock Turtles that lives near the Dune Cliffs. They are more cruel and vicious than anything you have fought before. Hunt them and come back to me. Do your best, since it is related to what I am going to ask of you later. When this is all done and over with, I will be sure to reward you."
Follow the road southeast a little ways of where Hunter Ken is standing. The Rock Turtles can be found on either side of the road. Where the road takes a turn north is where the Rock Turtles stop. Once you kill enough head back to Hunter Ken.
"Oveli must have tested you better than I thought. You have proved your abilities well. Now, here's what I have to say."