Varga isn’t exactly impressed by the design of the Icerail weapon – she wants to improve it, and to do that she needs a Thunderjaw Mandible. Of course, she wants to go with you again to help. Equip the errand from the quest menu and check the map for the Thunderjaw site – you may only be able to fast travel so far before making the rest of the trip on foot.

Warning: You can access this part of the errand only when you have completed the For the Werak quest line and have received the Icerail weapon from the reward box.

(1 of 2) Go to the Thunderjaw site

Go to the Thunderjaw site (left), Speak to Varga waiting on the cliffs (right)

When you arrive at the site, follow the waypoint to speak to Varga who’s waiting on a cliff as she looks down on the Thunderjaw. Initiate the fight when you’re ready, and once you’ve successfully taken down this huge machine, loot it for the Thunderjaw Mandible and return to Varga.

(1 of 2) Battle the Thunderjaw

Battle the Thunderjaw (left), Loot it for the Thunderjaw Mandible (right)

This time, she’ll take the Icerail weapon and modify it so that it can shoot Freeze explosives! These will come in handy for your next errand with her. Choose Forgefire from the dialogue wheel to start it up.

Guide Information

  • Publisher
    Sony Interactive Entertainment
  • Platforms
    PS4
  • Genre
    Action RPG
  • Guide Release
    16 February 2017
  • Last Updated
    29 October 2020
  • Guide Author
    Nathan Garvin, Jarrod Garripoli

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Taking place one-thousand years in the future, colossal machines have overrun and dominated the land, forcing humans to regress to tribal societies who have to survive off the land. Where did these behemoths come from? With a love for technology, it is up to Aloy, an outcast of her Nora tribe, to uncover the mysteries of her world. Take to the open world to explore, fight the metal monstrosities and learn all about the wonderful world of Horizon: Zero Dawn.

Version 1.2

  • Basic mechanics, including exploring, gathering, fighting and crafting.
  • Completion of every single side mission and errand in the game.
  • Collectibles and locations section updated (Banuk Figures, Vantage Points, Bandit Camps etc).
  • A thorough walkthrough of the main story missions.
  • A complete walkthrough of every single side mission in the game.
  • Strategies on how to defeat each of the enemies.
  • A full trophy guide.
  • Full Frozen Wilds DLC guide.

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