Version 4.0 of Genshin Impact brings the highly anticipated Hydro region, Fontaine. With underwater exploration as a new feature, you can bet there are many new Hidden Achievements to find. Before we begin, it is recommended that you first finish both acts of Archon Quest Chapter IV, as many achievements may be locked behind them. Now, let’s take a look at how to get all the Hidden Achievements added in Versions 4.0.

Exploration

Waterworld Future

After unlocking the first Statue of The Seven at Romaritime Harbor, players will unlock the Hydro element for Traveler and the ability to dive underwater. Simply take a dive in Fontaine’s waters for the first time to get this achievement.

Welcome to Fontaine

For this achievement, take an Aquabus for the first time. Players can access the Clementine Line at Romaritime Harbor, the Navia Line at Marcotte Station, or both lines through the center elevator of Court of Fontaine.

An Eye for an Eye

For this achievement, players will need to find a Bullet Barnacle underwater. There are several, but one location has been marked in the image for your convenience. Find the nearby Xenochromatic Armored Crab and take its abilities using the Transoceanic Sourcewater attack (Left-click on PC). Bullet Barnacles will continuously fire yellow energy bolts at the player when they are close. Hold down the newly gained Skill (E) to absorb an energy bolt and release it back towards the Barnacle to get this achievement.

A Sudden Squall

Head inside the Palais Mermonia in Court of Fontaine after the completion of Act II of the Archon Quest Chapter IV. Talk to Iaune to complete a quick world quest for this achievement.

Sogno di Volare

To earn this achievement, players will need to ride on one Miraculous Antoine Roger Aircraft and complete its flight. There are seven located around Fontaine and players must activate them with the nearby Ousia Block

Twenty Thousand Leagues Under the Sea

For this achievement, players simply need to travel through one of Fontaine’s Currents underwater. Currents can be found in various places through exploration and quests. For convenience, the image provides one example located during a Time Trial Challenge.

Angel Eraser

Go to each of these Beast Rifts in Elynas and defeat Rifthounds to activate a defense challenge. Complete a defense challenge at all three locations to earn this achievement.

Core Cooling

Head towards this location in Elynas and solve three mini puzzles around the pond to free three Water Volume Detection Crystals. Interact with each of the Crystals to move them to the rock by the center of the pond. On top of the rock formation is a Miraculous Hydrograna. Touch it and stand in the water by the three Crystals to activate them simultaneously.

After succeeding, open the chest and take the water pathway into an underwater cave, where you must find and place Hydro Cores by three bond fires. Keep in mind, three Hydrogranas combine to make one Hydro Core. You can also stand in water to grow one Hydrograna into a Hydro Core. Once this is complete, activate the Hydro Monument and follow the water rings and currents, which will eventually lead back to the pond up top. The achievement is acquired once you are back to the pond.

Do You Believe in Rapture

There are two possible locations from which to obtain this achievement and only one needed for completion. One is in Chemin de L’Espoir and the other is in northern Salacia Plain. Each location will have a Luxurious Chest locked in a giant bubble. Solve the three Time Trial Challenges linked to it to obtain this achievement.

These are a Few of My…

Like the achievement above, only one completion is needed from two possible locations. One location is at Salacia Plain and the other is at Elton Trench. Solve the puzzles by maneuvering the orbs into the ring to unlock the barricade. Enter the structure and interact with the gramophone to complete this achievement.

Like Tears in the Rain

A mechanical imposter can be found swimming with a group of rays at the marked location. Defeat the imposter to obtain this achievement.

Blubby, Chubby, Creative Evolution

Enter the structure at this location and it will prompt you to read a researcher’s notes. Afterwards, feed the Blubberbeast, Berrypuff, some fish to restore it back to health. You will need to come back to feed Berrypuff four more times, with each subsequent feeding session locked behind a six hour time-gate. In addition to feeding, there are additional tasks to do, such as freeing Blubberbeasts and defeating Clockwork Mekas. After feeding Berrypuff for the fifth time, it will reward a Luxurious Chest and the achievement.

Aesthetics of Ugliness

Head to one of the marked red locations and complete a puzzle near an empty canvas. This will trigger a quest where Salsa appears and asks you to complete another puzzle by arranging objects. Repeat this at the four other red locations before heading to the blue location in the north. Solve the Hydro Monument puzzle and rearrange it to trigger the last dialogue scene. The achievement will be granted after the dialogue.

Truly Mouthwatering!

Head to the blue marker and talk to Henri, who is buried in the sand. Proceed with his quest and rescue him from the sand. Afterwards, Henri will ask you to bring him seven Mysterious Cores from machines located at the red markers. Use nearby Ousia and Pneuma Blocks to disable and retrieve their cores. Return with the seven cores to continue the quest. Collect the Roast Chicken after the quest to receive this achievement.

Combat

Cell, Splinter

For this achievement, players must break the Geo or Dendro shield of a Breacher Primus using an attack with Pneuma or Ousia. Hydro Traveler and Lynette have Elemental Skills that inflict Pneuma and Ousia respectively. Both characters are obtained for free in Version 4.0.

Too Hot to Handle

To earn this achievement, players must keep a Tainted Hydro Phantasm continuously frozen until it breaks itself out with steam. It is recommended to bring multiple Cryo characters to spam consecutive Cryo abilities.

Funerary Storm

Choose Dirge of Coppelia for the Icewind Suite boss fight. During the fight, the bosses will occasionally move to the middle to perform a ‘Climax’ attack sequence. Coppelius will skate around Coppelia while three Anemo Whirlwinds spawn in the arena. To earn this achievement, players must interrupt Coppelia in the middle with a Pneuma attack, such as Hydro Traveler’s Elemental Skill.

Icebound Oath

Choose Nemesis of Coppelius for the Icewind Suite boss fight. Similar to Dirge of Coppelia, the bosses will move to the middle to perform a ‘Climax’ attack sequence. When Coppelius gains a Cryo shield, use an Ousia attack, such as Lynette’s Elemental Skill, to break the shield and earn the achievement.

The King Is Dead, Long Live the King!

For this achievement, players must interrupt Emperor of Fire and Iron while he is casting Searing Coronation. To do this, players need to deplete the Pyro bar above his head during the cast. An easy way to do this is to lower the Pyro bar until one hit from depletion, then wait for the boss to burrow half his body in the sand. Once burrowed, the boss will cast a giant red AOE that players can then interrupt for the achievement.

Defeating Local Legends

The following few combat hidden achievements require players to defeat various special creatures around Fontaine.

Vivianne of the Lake

Defeat Vivianne of the Lake for this achievement. Be careful when fighting Vivianne, as she has a lot of HP and hits quite hard.

Ninianne of the Lake

Defeat Ninianne of the Lake for this achievement. Similar to Vivianne, Ninianne is quite tanky and deals a lot of damage.

Iron Viscount

Defeat Iron Viscount to acquire this achievement. Iron Viscount can be found in the underwater cave that was unlocked through the achievement, ‘Core Cooling’. Take the ability of a nearby Xenochromatic Armored Crab and use it to parry the projectiles thrown by Iron Viscount. Shooting the projectiles back should deal massive damage to him.

Ocean Circuit Judge

Defeat Ocean Circuit Judge to acquire this achievement. He can be defeated the exact same way as Iron Viscount, by using Xenochromatic Armored Crab’s ability.

Fading Veteran

Defeat Fading Veteran to acquire this achievement. Fading Veteran will periodically go invisible and shoot projectiles at you. Take the sonar wave ability of a nearby Xenochromatic Blubberbeast to knock Fading Veteran out of stealth. Keep an eye on his projectiles and your enemy locator to pinpoint his location while he's invisible.

Dobharcu, Lord of the Hidden

Defeat Dobharcu to acquire this achievement. Dobharcu can be defeated the same way as Fading Veteran, by utilizing Xenochromatic Blubberbeast’s sonar ability.

The White Path Between Two Rivers

This achievement requires one party member to perish during a fight against either the Fairy Knight Twins or the Swords of the Gorge. It is recommended to do this first before the following two achievements, to get it out of the way. More details below.

The Fairy Knight Twins

Defeat the Fairy Knight Twins to acquire this achievement. Take the Water Blade ability from a nearby Xenochromatic Hunter’s Ray to fight the twins. Dodge their projectiles while firing your own to defeat them. To deal more damage, sever their link when they attempt to connect with each other.

Swords of the Gorge

Defeat Swords of the Gorge to acquire this achievement. They can be defeated the same way as the Fairy Knight Twins. Remember to aim for their link in the middle to deal extra damage to both.

World Quests

Aqueous Tidemarks & A Fontainian Message

The following three achievements are related to two World Quests, ‘Aqueous Tidemarks’ and ‘A Fontainian Message’. Archon Quest Chapter IV, Act II completion is required before these quests become available.

• A Study in Sable
  
• Encyclopedia of Natural Philosophy
  
• A Fontainian Message

Head to the Statue of the Seven in Court of Fontaine and speak to Virgil to start ‘Aqueous Tidemarks’. After finishing the quest, teleport back to the room where you fought the Ruin Grader and broke the glass barrier. Head into the room that was behind the glass barrier and read the book on the table to get the achievement 'Encyclopedia of Natural Philosophy’.

After reading the book, you’ll be instantly teleported inside the Narzissenkreuz Ordo. Open the two chests at the back of the room to obtain a Drained Conch Cup and a key. Teleport out of the room using the waypoint to the north and backtrack to a door that was locked during the quest. Insert the key and continue down the path until you reach another door. Open that door to obtain ‘A Study in Sable’.

Head back to the Statue of the Seven in Court of Fontaine where Vergil initially gave you the quest ‘Aqueous Tidemarks’. Talk to Sonny and Luca for the follow-up quest ‘A Fontanian Message’ and complete it for the achievement ‘A Fontanian Message’.

Ancient Colors

The following achievements are all related to the World Quest series, Ancient Colors, and starts off in Elynas with ‘The Illusion’s Finishings’.

• The White Ship
  
• Nothing but a Hound Dog…
  
• Birth of the Modern Clock
  
• Song of the Ancients
  
• It’s Fish, I Added Fish

Head to the marked location and save Mamere from the Eremites to begin her quest

While doing Ancient Colors, you will come across other world quests that need to be picked up and completed. This guide will assume you do the world quests as soon as you see them. When you enter Merusea Village, talk to Verenata to pick up the world quest, ‘Hey, This Isn’t Pumpkin Soup…’ and complete it. Afterwards, continue on ‘The Illusion’s Finishings’ until you come across Ahes in ‘A Lonely Place’. Complete her quest, ‘The Lone Phantom Sail’ for the achievement ‘The White Ship’.

Once you reach Act II of Ancient Colors, Mamere will ask you to find four Strange Parts to fix Seymour. Verenata and Ahes should have rewarded you with one each for their respective quests. Speak to Serene in Merusea Village to obtain the rest of the Strange Parts. Bring the parts back to Mamere and you should receive the achievement, ‘Nothing but a Hound Dog…’.

After finishing Act III of Ancient Colors, you can return to ‘A Very Bright Place’ to pick up the quest ‘Strange Stone Chronicle’ from Puca. Finish this quest chain to receive the achievement, ‘Birth of the Modern Clock’. There is a two day time-gate for the last part of this quest chain, which can be continued by talking to Chesil.

In the meantime, head back to Merusea Village to pick up another quest from Verenata, called ‘Echoes of the Ancient World’. Complete this quest to receive the achievement ‘Song of the Ancients’.

Lastly, in the water nearby Verenata, you can find Canotila who offers the quest ‘Book of Esoteric Revelations’. Once players have completed all three quests given by Verenata, Puca, and Canotila, return to Merusea Village to interact with them. After celebrating with them, you should receive the achievement, ‘It’s Fish, I Added Fish’. The achievement notification may not pop up on screen, but it should be listed as completed.

Ann of the Narzissenkreuz

Head into this underwater doorway in Chemin de L’Espoir and a little Oceanid will appear, activating the World Quest series, ‘Ann of the Narzissenkreuz’. Complete the series to obtain the following two hidden achievements.

• Hardships Experienced…
  
• And After That…

Fontaine Expects That Everyone Will Do Their Duty

This achievement requires the completion of ‘The Lone Phantom Sail’ and Act II of ‘Ann of the Narzissenkreuz’. During ‘Ann of the Narzissenkreuz’, you will obtain a ‘Green Feather Accessory’ from an Exquisite Chest. Bring this item to where Ahes was at the end of ‘The Lone Phantom Sail’ and place it in the sparkling crate to earn this achievement.

Commissions

Unfortunately, all the achievements in this category require you to complete multiple variations of their respective commissions. This is entirely luck based, so remember to set your commission region to Fontaine to increase the odds of receiving them.

Not Your Average Joe

This achievement comes from the commission, ‘Get a Drink At Least!’. This commission has several variations, and you may need to succeed brewing drinks a few times before the right version becomes available. The achievement is acquired in the version where Arouet has you create a special blend of coffee.

Office on the Avenue

This achievement requires players to complete all three variations of the commission, ‘Tales From the Court’.

Aesthetic Critique

This achievement requires players to complete all three variations of the commission, ‘Aesthetic Critique: Principles of Aesthetics’.

Second Childhood

This achievement requires players to complete a series of commissions called ‘Their Childhood’.

Masquerade of the Guilty

The following are hidden achievements obtained by going through Fontaine’s Archon Quests. They are listed here for player’s convenience:

Archon Quest Chapter IV, Act I:

• Like Water Disappearing Into Water
  
• A Detective in Action
  
• A Twist of Great Magic
  
• Prelude of Blancheur and Noirceur

Archon Quest Chapter IV, Act II:

• Lennék én folyóvíz
  
• Once Upon a Time in Fleuve Cendre
  
• Tragedy Repeats Itself
  
• As Light Rain Falls Without Reason

Conclusion

As always, with achievement hunting, it is recommended to use third-party sites like paimon.moe or TakaGG to help better keep track of progress. Players should also take advantage of the game’s official Interactive Map on the official forums. The map contains useful information related to many of the achievements, so players can have an easier time locating what they need. Good luck achievement hunting!