Walkthrough Horizon Forbidden West: "On the Edge"

Reward: 2 skill points, 2500 experience points.

After going down on the lift, talk to Vaudis and Joruf. Make your way to the settlement of Grinding Mountains to meet Petra. There are several side quests here. At the workbench, upgrade the bow, and then follow the marker in search of Erend.

Arriving at the place, deal with the enemies. Lure them into electric traps. Talk to Turlis. He will say that you can visit him to complete the hunting grounds trials. We will talk about them later. After that, follow Erend's trail. Turn on the scanner and you will see purple footprints. Follow them. Go around or destroy the cars along the way. After reaching Erend, after the cut-scene, destroy the first billhooks. Shoot acid arrows at the flasks on their backs. After defeating everyone, listen to Erend.

Run along the marker, killing billhooks. At the very end, help the civilians deal with the Cleavers, and then go to Grinding Mountain and talk to Ulvund. The quest will end with a conversation with Vuadis.