Horizon Forbidden West (HFW)

The Broken Sky Walkthrough

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The Broken Sky is one of the main quests in Horizon Forbidden West (HFW). Read on to see the detailed walkthrough, rewards, location, and tips for the The Broken Sky quest!

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The Eye of the Earth The Broken Sky The Kulrut

The Broken Sky Overview

Basic Information

The Broken Sky
Description Aloy must travel to the heart of Tenakth territory in search of AETHER - one of GAIA's lost subordinate functions.
Rewards ・11050 XP
・2 Skill Points
・1 Tenakth Conqueror
Recommended Level 17

The Broken Sky Walkthrough

Objectives
1 Horizon Forbidden West - The Broken Sky - Go to the Throne Room
・Go to AETHER's Coordinates
・Enter the Tenakth Stronghold
・Go to the Throne Room
・Talk to Dekka

Ride to the Tenakth Stronghold and enter. If you're not interested in watching the Visions, flag the Throne Room objective on the map to filter it out from the other objectives.
2 Horizon Forbidden West - The Broken Sky - Go to Stone Crest
・Meet Kotallo at Stone Crest
After receiving your Sharpshot Bow from Dekka, ride your mount again and head off to Stone Crest.
3 Horizon Forbidden West - The Broken Sky - Rebels
・Follow Kotallo
・Talk to Kotallo
・Talk to the Guard

Either fight or sneak past the Rebels.
Sneaking past is fairly easy as they don't go out of their way to look for you. Only fight if you're interested in item drops or XP.
4
・Go to the Bottom of the Bulwark
・Scan the Bulwark
・Find a Path up the Bulwark
・Climb the Bulwark
・Clear the Obstruction
・Investigate the Passage
・Scan the Ancient Debris
・Talk to Kotallo

Take the lift down. Then, scan the rock wall on Aloy's right after exiting the cliff side to find a metal object inside. Move back some and scan it again to advance to the next objective. Follow the path around and climb up into the cave. Scan the metal object again from the end of the cave.
5 Horizon Forbidden West - The Broken Sky - Return to the Bulwark
・Find a Cannon
・Kill the Tremortusk and the Rebels
・Loot the Tremortusk
・Return to the Bulwark

Go back out and follow Kotallo to the Tremortusk. Defeat the Tremortusk and the Rebels and loot its corpse. Then, use the cannon from the Tremortusk to shoot the target on the rock wall until it is destroyed to complete the Quest.
Use Frost Bombs or Frost Arrows to inflict the Freeze status condition on the Tremortusk.

▸Next Quest: The Kulrut

Tips and Strategies

Hit the Tremortusk with Freeze

Horizon Forbidden West - Freeze Tremortusk
The Tremortusk deals big damage and can kill you easily when left alone, but inflicting it with the Freeze status condition will leave it effectively immobile.

Its Blaze Sac on its stomach is also a major weak point, so try to fill it with arrows as much as possible each time it rears up.

Fighting the Rebels

Horizon Forbidden West - Fighting the Rebels
You can sneak up to the rebels and perform a Silent Strike. It should be enough to kill them instantly. You can also aim for their heads to deal increased damage.

Rebels with shields are weak against Acid Arrows. You can rain the rebels down using them to disable their shields temporarily and expose them to any attacks.

How to Fix Return to the Bulwark Bug

Horizon Forbidden West - The Broken Sky - How to Fix Bug
Kotallo sometimes gets bugged out when returning to the bulwark to fire off the cannon. To fix this, you can go up to base camp to trigger the autosave feature, select restart from save, and the quest should progress correctly from there.

Boss Strategy Guide

Tremortusk

Horizon Forbidden West - The Broken Sky - Tremor Tusk

How to Beat Tremortusk - Key Points

  • Freeze Tremortusk using Frost Blastsling, Freeze Arrows, or Chillwater Drum.
  • Shoot the Blaze Sac to cause a large explosion.
  • Remove Tremortusks Components to reduce its attacking capabilities.

How to Beat Tremortusk: Boss Fight Guide

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 Main Quests

No. Quest
1 Reach for the Stars
2 The Point of the Lance
3 To the Brink
4 The Embassy
5 Death's Door
6 The Dying Lands
7 The Eye of the Earth
8 The Broken Sky
9 The Kulrut
10 Cradle of Echoes
11 The Sea of Sands
12 Seeds of the Past
13 Faro's Tomb
14 Gemini
15 All That Remains
16 The Wings of the Ten
17 Singularity

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