Spoiler warning: Plot or ending details follow.
The Thunder Helm is a side quest in The Legend of Zelda: Breath of the Wild. It is given to Link by Riju in the Gerudo Desert. The purpose of this quest is to complete several side quests in order to help the Gerudo in Gerudo Town with their various problems. The Thunder Helm will be given to Link as the reward. Several side quests must be completed:
- The Search for Barta from Liana
- Medicinal Molduga from Malena
- The Mystery Polluter from Dalia
- Tools of the Trade from Isha
Spoiler warning: Spoilers end here.