Where can I find all the hidden achievements in the Fort Mumei in Genshin Impact?

Fort Mumei is a location in Genshin Impact that is part of the Inazuma region, specifically found on Tsurumi Island. This area is known for its eerie atmosphere and unique mechanics tied to the "Peculiar Pinion" gadget, which is essential for uncovering hidden secrets and achievements. To find all the hidden achievements in Fort Mumei, you will need to engage with the environment, solve puzzles, and interact with specific objects using the Peculiar Pinion. Below is a detailed guide to help you achieve this.

First, you must ensure that you have completed the "Through the Mists" world quest series on Tsurumi Island. This questline unlocks the Peculiar Pinion gadget, which is crucial for interacting with the Thunderbird statues scattered around Fort Mumei. Without this gadget, you cannot progress or unlock the hidden achievements. Once you have the Peculiar Pinion, you can begin exploring Fort Mumei for hidden achievements.

One of the key achievements in Fort Mumei is "The Saga of Mr. Forgetful." To unlock this, you need to interact with a series of stone slates found in the area. These slates are hidden behind Thunderbird statues, which require the Peculiar Pinion to reveal. Start by heading to the central area of Fort Mumei, where you will find a large Thunderbird statue. Use the Peculiar Pinion on the statue to reveal a hidden mechanism. Interact with the mechanism to uncover the first stone slate. Repeat this process for the remaining slates, which are located in different parts of the fort. Once you have collected all the slates, the achievement will unlock.

Another important achievement is "The Saga of Mr. Forgetful: Act II." This achievement is tied to a hidden quest that involves finding and interacting with specific objects in Fort Mumei. Start by locating a small, unmarked area near the fort where you will find a set of glowing stones. Use the Peculiar Pinion on these stones to reveal a hidden path. Follow the path to find a series of puzzles that need to be solved. These puzzles involve aligning symbols and activating mechanisms using the Peculiar Pinion. Once you complete the puzzles, the achievement will unlock.

A third achievement, "The Saga of Mr. Forgetful: Act III," requires you to solve a more complex puzzle involving multiple Thunderbird statues. This puzzle is located in a secluded area of Fort Mumei, accessible only after completing the previous acts. Use the Peculiar Pinion on each statue to reveal hidden symbols. Align these symbols in the correct order to unlock a hidden chamber. Inside the chamber, you will find a final mechanism that, when activated, will unlock the achievement.

When exploring Fort Mumei, it is important to pay attention to your surroundings. Many of the hidden achievements require you to interact with objects that are not immediately visible. Use the Peculiar Pinion on any suspicious-looking statues or stones to reveal hidden mechanisms. Additionally, make sure to bring a character with high mobility, such as Kazuha or Venti, to help you navigate the terrain more efficiently.

Team composition is also important when exploring Fort Mumei. Since the area is filled with enemies, it is recommended to bring a balanced team with strong DPS characters, such as Hu Tao or Ayaka, and a reliable healer, such as Bennett or Kokomi. This will ensure that you can handle any combat encounters while exploring. Additionally, having a character with a bow, such as Ganyu or Yoimiya, can be useful for solving certain puzzles that require ranged attacks.

Artifact and weapon recommendations for your team should focus on maximizing damage output and survivability. For DPS characters, consider using artifacts like Crimson Witch of Flames for Pyro characters or Blizzard Strayer for Cryo characters. For healers, artifacts like Maiden Beloved or Ocean-Hued Clam are ideal. Weapons should be chosen based on your characters' abilities and playstyles. For example, a character like Hu Tao benefits greatly from the Staff of Homa, while a character like Ayaka performs well with the Mistsplitter Reforged.

Common mistakes to avoid include rushing through the area without thoroughly exploring. Many of the hidden achievements require careful observation and interaction with the environment. Additionally, make sure to use the Peculiar Pinion on every suspicious object, as some mechanisms are well-hidden. Another mistake is neglecting to bring a balanced team, which can make combat encounters more difficult.

Advanced techniques for optimizing your exploration include using the interactive map to mark the locations of Thunderbird statues and stone slates. This can help you keep track of which areas you have already explored and which ones still need attention. Additionally, using food buffs and potions can give you an edge in combat, making it easier to focus on solving puzzles and unlocking achievements.

In summary, unlocking all the hidden achievements in Fort Mumei requires careful exploration, puzzle-solving, and interaction with the environment using the Peculiar Pinion. By following the steps outlined above, paying attention to your surroundings, and bringing a balanced team, you can efficiently uncover all the hidden secrets and achievements in this mysterious area of Tsurumi Island.