How to unlock the Mysterious chest on Guau-Guau Island in Far Cry 6 – Where to use the Mysterious Key

Pet Pupper. Feed pupper. Get gifts of pupper!

Suppose you've been to Guau-Guau Island, which is on the starting island of Isla Santuario, in the Casas Cove area, in the middle of the water. You may have seen a Mysterious Chest that is locked, and even if you explore the island, it'll be for naught as the key needed is not here.

To unlock the Mysterious Chest, you need to find the Mysterious Key obtained during a Yaran Story Fetch Quest after completing Who's A Good Boy? The Yaran story is located in Madrugada in the Costa Del Mar area. To make this story appear, you have to complete a story quest Meet the Monteros.

If you already have the key, the chest is located on the island in the picture below.

Related: All Baseball Memorabilia Locations in Far Cry 6 - Stealing Home Yaram Story

To complete the Who's a Good Boy? story fast. The pupper wants to eat Crocodile meat, so if you have some already on you, put it into the dog bowl, and story complete.

To complete Fetch Quest, all you had to do is pet Chorizo, follow him around and collect the Mysterious Key. With the Key in hand, go back to Guau-Gaua Island and unlock the chest for a F*ck Anton Rifle.

For more Far Cry 6 guides, ProGameGuides has you covered!

Follow us on Twitter and Facebook to get updates on your favorite games!

About the Author

Hey, my name is Mark, and I'm a video game enthusiast! My earliest memory was playing Worms on the Amiga against my Godmother, yes the Amiga, massive box type thing, needed eighty-five thousand floppy disks to play one game, maybe a slight exaggeration. Ah, those were the days! I love RPG’s, and The Legend of Zelda series. Dogs are pretty awesome.
Find Mark Carpenter On: Twitter

Recently Updated Far Cry Posts

Leave a Comment

Comments are on moderation and will be approved in a timely manner. Please read the following rules before commenting:

  • All comments must be on topic and add something of substance to the post
  • No swearing or inappropriate words
  • No asking or begging for anything free
  • Do not attempt to start a poll in the comments
  • Comments in all CAPS will be removed
  • We reserve the right to remove a comment for any reason
  • Do not impersonate a staff member or influencer

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.