Aided Kotallo Trophy Guide - Horizon Forbidden West

To start the "What was lost" quest, speak to the Base. This quest will be available after completing the "The kulrut", "The sea of Sands" and "Seeds of the Past" quests.

Kotallo will be at Memorial Grove instead, if you have already finished the story.

You should choose "A Personal Request" Dialogue.

At the shown Campfire, meet Kotallo.

On the way to the entrance, you can avoid or kill the machines.

Interact with the green panel, after following the quest markers to the storage room.

Follow the markers back up to the 2nd floor, after defeating the spectors.

Until you get to the room with the firegleam and loot the chest, follow this path!

Talk to Kotallo near the entrance then back again at the base.

Go to the next location shown, after choosing the "Testing the Arm" Dialogue option.

Get the Trophy after defeating the Scorcher to end the Quest.