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Horizon Forbidden West (HFW)

What Was Lost Side Quest Walkthrough

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This guide will show you how to complete the What Was Lost, a Side Quest in Horizon Forbidden West (HFW). Read on to learn the quest objectives, strategies, location, and rewards for completing the What Was Lost Side Quest.

List of Contents

What Was Lost Quest Information

General Info

What Was Lost
Quest Giver Kotallo
Description Kotallo wants to build a new arm using ancient Zenith technology. But he needs Aloy's help to complete his mission.
Rewards ・9750 XP
・3 Skill Points
・1 Shellsnapper Circulator
・2 Behemoth Force Loader
・2 Ancient Sculpture
Recommended Level 30

How to Unlock What Was Lost and Location

Complete The Kulrut

The Valley of the Fallen unlocks after completing The Kulrut main quest.

Talk to Kotallo

What Was Lost Location

Talk to Kotallo at The Base to begin the side quest.

What Was Lost Location

What Was Lost Map Location
Map Location
What Was Lost Location
World Location

What Was Lost Walkthrough

How to Complete

Objectives
1 Go to the Campfire Near the LabGo to the Campfire Near the Lab
Travel to the campfire near the ab to call Kotallo.
2 Find the Entrance and Kill the MachinesFind the Entrance and Kill the Machines
Reach the entrance where you will find machines in the area. Kill them to enter the lab.
3 Enter the Zenith LabEnter the Zenith Lab
Enter the Lab, where you'll find more enemies. Kill them and investigate the area
4 Find the Storage Access CodeFind the Storage Access Code
Go to the main area and find the operations console near the main access console.
5 Kill the SpectersKill the Specters
Kill the incoming Specters to proceed to the components.
6 Find the ComponentsFind the Components
Go to the second floor of the lab and find the vent that leads to the lab.
7 Explore the LabExplore the Lab
Enter the lab and find a vent that you can pull down. This allows you to find an entry point to the other side of the room. Ignite the Firegleam to access the previous room.
8 Find the Zenith ComponentFind the Zenith Component
Pry open one of the ancient crates to find the components.
9 Talk to KotalloTalk to Kotallo
Give the component to Kotallo. Return to The Base to continue the quest.
10 Go to the Meeting PlaceGo to the Meeting Place
Proceed to the meeting place and call Kotallo.
11 Follow Kotallo
Follow Kotallo, who will guide you to the next objective.
12 Kill the ScorcherKill the Scorcher
Test Kotallo's new arm by killing the Scorcher. This will complete the side quest.

Tips and Strategies

Use Shock and Freeze Against the Scorcher

The Scorcher is weak against freeze and shock ammo. This slows them down, and allows you to break their components easier.

Horizon Forbidden West Quests

Horizon Forbidden West - List of All Quests Partial.png
List of All Quests

List of All Quest Types

Main Story
Story Walkthrough & Main Quests
Optional Quests
Side Quests Errands
Salvage Contracts Hunting Grounds
Rebel Camps Relic Ruins
Tallnecks Cauldrons
The Arena Gauntlet Runs
Rebel Outposts Melee Pits

List of All Side Quests

Side Quest Level
Deep Trouble Lv. 5
The Bristlebacks Lv. 7
The Twilight Path Lv. 7
Shadow of the Past Lv. 7
Shadow in the West Lv. 10
Drowned Hopes Lv. 22
The Burning Blooms Lv. 15
Need to Know Lv. 25
The Roots that Bind Lv. 15
A Tribe Apart Lv. 15
The Promontory Lv. 17
Thirst for the Hunt Lv. 17
The Wound in the Sand Lv. 19
The Gate of the Vanquished Lv. 15
The Deluge Lv. 15
Signal Spike Lv. 16
Breaking Even Lv. 18
A Soldier's March Lv. 18
Blood for Blood Lv. 19
The Second Verse Lv. 25
The Valley of the Fallen Lv. 28
The Way Home Lv. 32
The Blood Choke Lv. 27
Forbidden Legacy Lv. 30
What Was Lost Lv. 30
In the Fog Lv. 20
Lofty Ambitions Lv. 24
Boom or Bust Lv. 24

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