Complete Horizon Forbidden West's What Was Lost Guide

Help Kotallo retrieve Zenith Components to build a new arm, then assist him in testing it against a Scorcher.

Help Kotallo retrieve Zenith Components to build a new arm, then assist him in testing it against a Scorcher.

Help Kotallo retrieve Zenith Components to build a new arm, then assist him in testing it against a Scorcher.

Help Kotallo retrieve Zenith Components to build a new arm, then assist him in testing it against a Scorcher.

Help Kotallo retrieve Zenith Components to build a new arm, then assist him in testing it against a Scorcher.

Walkthrough

1
Accept the quest from Kotallo at a Campfire outside the Ninmah Research Lab.
2
Enter the lab and defeat or sneak past the Apex Scrapper, Apex Redeye Watcher, and Apex Shell-Walker at the entrance.
3
Proceed to the Storage Room, defeating two Apex Scrappers and potentially an Apex Burrower.
4
Access the database console opposite the entrance to the Storage Room.
5
Defeat the two Specters that appear. Note: Scan them for the All Machine Types Scanned trophy if you haven't already.
6
Go to the second floor and follow the markers to find the components.
7
Enter the room overlooking the Storage Room. Kotallo will wait here.
8
Go through the marked door, then into a large room with a vent panel. Use your Pullcaster to remove it.
9
Follow the hallway to another room. Look for a vent panel on the ceiling.
10
Stand on the desk, crawl through the vent, and enter the next room.
11
Pass through the door and pry open the chest with your spear to obtain the Zenith Components.
12
Use the Firegleam on the opposite side of the room to create a shortcut back to Kotallo.
13
Return to The Base and speak to Kotallo.
14
After completing Faro's Tomb, return to The Base and speak to Kotallo to begin the arm testing phase.
15
Meet Kotallo at the Campfire northeast of The Bulwark.
16
Follow Kotallo to a Scorcher.
17
Defeat the Scorcher. Focus on detaching its back component and shooting its ears. Keep moving to avoid its dash attack.
18
After the fight, return to The Base and speak to Kotallo.

Tips

Use the Stalker's Dart Gun found on the ground near the lab entrance to deal significant damage to the initial machines.
Sneaking past the initial machines can save time.
Explosive ammo is effective against Specters as they have few detachable components.
Keep moving during the Scorcher fight to dodge its quick dash attack.
Detaching the Scorcher's back component can cause an explosion and deal high damage.
Shooting off the Scorcher's ears provides exclusive loot, though it can be difficult.
Hitting the component above the Scorcher's hind legs can cause an explosion.

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