The Foolish Fatuus is a new World Quest introduced in Genshin Impact 3.0 with a hidden achievement known as Open Sesame! However, there is a prerequisite to starting this quest. Travelers must complete all eight Strange Energy Extraction Device puzzles (also known as Saghira Machines).
It doesn't matter which order players do the eight Strange Energy Extraction Device puzzles. Since some haven't gotten started on that yet, this guide will include a small map of all eight locations for their convenience.
The purple stars in the above image represent the locations for the Strange Energy Extraction Device puzzles. When the player gets near one, they will see a prompt stating:
These puzzles will have either two or three keys that Genshin Impact players must find.
Since this guide is primarily about the quest that comes after this puzzle, readers are recommended to consult the above video for specific key locations. Once they finish all Saghira Machine puzzles, they must go to the Eremite camp that's southwest of the Yasna Monument to start The Foolish Fatuus.
Go to the above location to see a brief cutscene involving the Eremites and the Fatui. After that's done, the player will be told to fight Oleg. He's just a Fatui Pyro Agent, so they shouldn't have an issue with defeating him. After he's defeated, the player will get an "Emergency Adjustment Plan."
One will then be told to "Go to Camp 2." They will see Oleg again near the middle of the yellow circle marker, standing near some wooden stairs. Like before, the player must defeat him in combat.
Once that's over, some more dialog will play out. Humorously enough, Genshin Impact players must go to another camp and defeat Oleg yet again.
When Oleg is defeated for the third time,
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