Unlock: Liberate the Hubris Farm outpost.
A friend of Dennis’s is digging outside of the ruins northeast of Citra’s temple, and he wants three tablets. One is on the floor in the flooded basement of the nearby temple ruins, near a Relic. The second is on the west side of the temple’s gate, in the shadows underneath the vestibule.
The third is inside the wrecked temple to the south, and requires you to blow open the fragile wall on its western column. Climb up through the wreckage of the wall, cross the gangplank, and carefully pick your way around the molding on the edge of the building until you can get to the shadowed area behind the ladder. There’s another Relic located in the same building, but the Relic is on the floor above the tablet.