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"The lesson will be taught in due time, Aloy. Until then, we wait."
This article contains heavy spoilers, and may reveal plot or quest information.

"I'm just a traveler, with a bow, a concern about the state of these lands and a missing partner."

Cause for Concern - Farewell is a side quest in Horizon Zero Dawn.


Obtaining the quest

While exploring the Sacred Lands for the first time, Aloy will encounter Nil, a Carja outlander, kneeling near a few dead bandits. If she speaks to him, he will give her the quest. Once he gives the quest, Nil will continue to spawn throughout the Sacred Lands in various locations along the main path - always surrounded by three dead bandits - until Aloy meets him outside of the bandit camp.

Cause for Concern - Farewell

After clearing out all six Bandit Camps, Nil invites Aloy to join him on the mesa south of Meridian, overlooking the Spearshafts for their final farewell.

Upon climbing up to the mesa, a number of bandit corpses can be seen lying around the camp. Here, Nil challenges Aloy to a duel to the death.

Should Aloy choose to accept his duel, she defeats and kills him in battle.

Should Aloy decline, she bids farewell to a disappointed Nil.


  1. Talk to Nil
  2. Accept or Decline Nil's offer to battle. (Accept means killing Nil.)
  3. Talk to Nil



Cause for Concern - Very Hard - No Damage - Video Guide


  • Deciding to kill Nil does not affect the secret trophy "All allies joined"; you can still obtain it without him.
  • If Aloy chooses not to kill Nil, then he will join Meridian's defenses during The Looming Shadow and The Face of Extinction.
Horizon Zero Dawn Quests
Main Quest A Gift from the Past - Lessons of the Wild - The Point of the Spear - Mother's Heart - The Proving - The Womb of the Mountain - A Seeker at the Gates - The War-Chief's Trail - Revenge of the Nora - The City of the Sun - The Field of the Fallen - Into the Borderlands - The Sun Shall Fall - Maker's End - The Grave-Hoard - To Curse the Darkness - Deep Secrets of the Earth - The Terror of the Sun - The Heart of the Nora - The Mountain That Fell - The Looming Shadow - The Face of Extinction
Side Quests A Daughter's Vengeance - A Moment's Peace - Acquired Taste - Ancient Armory - Blood on Stone - Cause for Concern - Farewell - Death from the Skies - Fatal Inheritance - Heap of Trouble - Honor The Fallen - Hunters' Blind - In Her Mother's Footsteps - Insult to Injury - Queen's Gambit - Redmaw - Robbing the Rich - Sun and Shadow - Sunstone Rock - The Forgotten - Traitor's Bounty - Underequipped - Weapons of the Lodge
Errands A Curious Proposal - Collateral - Deadliest Game - Demand and Supply - Hammer and Steel - Healer's Oath - Hunting for the Lodge - In Foreign Lands - Luck of the Hunt - Odd Grata - Sanctuary - Shortage of Supplies - Sun's Judgment - To Old Acquaintance
Activities Bandit Camps Blackwing Snag - Devil's Thirst - Gatelands - Hollow Fort - Shattered Kiln - Stone YieldFW - Two-Teeth
Cauldrons Cauldron RHO - Cauldron SIGMA - Cauldron XI - Cauldron ZETA
Corrupted Zones Corrupted Zones
Hunting Grounds Greatrun - Nora - SnowchantsFW - Spurflints - Sun Furrows - Valleymeet
Tallnecks Devil's Thirst - Copper Deeps - FrostfiguresFW - Rustwash - Spearshafts - Sun-Steps
Horizon Zero Dawn: The Frozen Wilds Quests
Side Quests Firebreak - For the Werak - Frontier Justice - Into the Frozen Wilds - The Forge of Winter - The Hunters Three - The Shaman's Path - The Survivor - Waterlogged
Errands A Secret Shared - Ikrie's Challenge - Geared Up: Forgefire - Geared Up: Icerail - Geared Up: Stormslinger - Out of the Forge - The Claws Beneath