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Lion's Celerity is a subquest of Hell from the A Long Day in the Mountains quest chain for Genshin Impact Luna VI. See how to unlock the World Quest and its walkthrough, and how to collect Deathmuse Shards in this guide!
List of Contents

Lion's Celerity automatically starts after completing the first chapter of the A Long Day in the Mountains quest chain, Paradise. The previous chapter ends after liberating all three areas in the Temple of Space and returning to the Pillar Hall.
This is the only quest of the second chapter of the A Long Day in the Mountains questline, Hell.

Exit through the north door of the Pillar Hall together with Zeitlind and Istoria. As soon as you step foot outside, a cutscene will trigger where you will be captured and get sent to a familiar place.

Walk along the beach towards the objective marker at the end. Melanta will reappear once you get close to the marker and will take you to a separate plane where you will see other people Melanta have taken.
Once you reach the end, "free yourself" by attacking the obstacle until the quest continues.

You are now in the Apathic Interval area of the Temple of Space. Follow the path ahead until you run into a huge red box, called a Maranasati Casket, that will immediately attack once you get close.
Similar to how you fought Afar's Avian in the previous chapter, you will also need to find an opening where Dex can grab the Casket's core and take a huge chunk out from its HP bar.
In this case, the Domain Keepers must first be defeated to make the Casket vulnerable. Do this twice and the Casket will be torn apart, freeing Istoria in the process.

There are two more Maranasati Caskets in the area that you can get Deathmuse Shards from. Go to the north Maranasati Casket first and defeat it.
This Casket will launch shockwaves that you can dodge by jumping as you move around it to find the face with the core.

After seizing its core twice, the Casket will hover high up and start bombarding the ground with blocks. You can have Dex grab the core of these blocks to increase their height, turning them into platforms that can help you reach the Casket's core again.

The third Maranasati Casket is on the south platform. Seizing its core might be tricky, as it will tumble around and send shockwaves with every other slam. Small blocks also fall down across the platform during its attack sequence, so you'll have to dodge and look for the core at the same time.

Take the Deathmuse Shards you've collected and use them to break the red seal on the west platform. Simply interact with the objective marker to automatically place the shards.

Have Dex grab the light that appears at the center and shoot it upwards. This will trigger a cutscene where the light pierces through the gigantic hand and the Wall of Lament above, opening a path back to the Temple of Space.

Take the stairs to the right and climb them to the top. At the end of the ascent, the space within the Apathic Interval will shift by 90 degrees.

Use the Harpasta on your right to transform into a Plume Moth and reach the platform in front of the hand. Approach the objective marker to take flight towards the other side of the Wall of Lament.
Dodge the projectiles the hand throws at you until you make it back to the Temple of Space and land in front of the Pillar Hall.

Reunite with Paimon and talk to the people you went back with to complete the quest!

Lion's Celerity is the only subquest of Hell under the quest chain, A Long Day in the Mountains.
Lion's Celerity is the third part (including the Prologue) of the A Long Day in the Mountains world quest chain.
A Long Day in the Mountains Quest Guide
| Total Quest Rewards |
Primogem x50 |
Hero's Wit x5 |
|---|
As you progress through the Lion's Celerity quest, all chests that you've encountered will yield varying amounts of Memory Factor, which you can then offer to the Memory Core in exchange of valuable rewards!
Memory Factor Locations and How to Get
| A Long Day in the Mountains World Quest Guides | ||
|---|---|---|
| A Long Day in the Mountains | The Wind Has Ceased | Paradise |
| Lion's Celerity | The Final Judgment | |
I accidentally teleported out of the apathatic interval after defeating the first Maranasati Casket and can’t find a way to continue the quest and go back to the apathatic interval. please help!
Lion's Celerity Quest Guide



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after checking my map it seems u can go back by just toggling the map layers when inside the temple of space