Heap of Trouble

Horizon Zero Dawn Top Story
Machine DB updated!
update 02/03/2017


The Oseram settlement of Free Heap is under attack by bandit's and machines. Without help, their claim will be overrun.

TypeSide Quest
Rewards4250 XP


  • Go to the Bandit Lair
  • Recover the Power Cells
  • Go to the Scrapper Den
  • Recover Weapon Parts
  • Give Weapon Parts to Petra
  • Protect Free Heap
  • Pick Up Petra's Weapon
  • Talk to Petra


Visit Free Heap and talk to Petra, a weapon maker.

Recover Weapon Parts

Once you talk to Petra, a weapon maker, she asks you to acquire materials that she needs to create Oseram Cannon, a special heavy weapon. Then you head to bandit clan's place. You will climb up the rocks in the screenshot above.

While you are beating bandits, you collect power cells. To get the third power cell, you will climb the rock wall in the screenshot above. Then, you also look for weapon parts around Scrappers' nest.

Defeat Bandits using Oseram Cannon

Petra crafts Oseram Cannon for you to defeat bandit clans that attack Free Heap once you give her collected parts. Enjoy the special heavy weapon!


Commens and feedback



Comments (updated every hour)

I cant use my blaze? I have it in my inventory but i cant create fire arrows...
Grist 2
does anyone know who is the actor? Grist is so handsome!
This quest is complete crap. Cultists just spawn infinitely and even headshots alert the others.
I purchased arrow packs from the vedor guy but I cant use them.. when I run out of arrows the onl...
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