This is a Gley build for normal and hard mode in The First Descendant. Read on to learn Gley's best builds, how to unlock, basic info, skills, as well as Gley's exclusive equipment and skins!

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Best Gley Build for Hard Mode

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Descendant Modules						Weapons and Modules
Reactor and External Components						Playstyle Tips
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Gley Hard Mode Build Showcase

Check out this Devourer clear using our Gley Hard Mode Build!

Best Gley Modules (Hard)

More Modules can be seen by scrolling horizontally.

This build primarily relies on using Massacre as your main weapon and Increased Sensory for the Maximize Lethality buff, which grants Gley infinite ammo. The combination of Massacre's inherent damage and infinite ammo makes this build exceptionally effective for dealing damage, especially against bosses.

To fully optimize this build, you need at least 70% Skill Cooldown Reduction and 80% Skill Duration to maintain the Increased Sensory buff on Gley continuously. Once you achieve 100% uptime on Increased Sensory, you can shift your focus to stacking Defense and HP. This will help you withstand enemy attacks, as the abilities' HP cost will often leave you low on health.

Modules Guide: List of Modules

Descendant Module Substitutes for Mobbing

Module Change			Explanation
Massive Sanguification	>	Blood and Iron	Allows generation of Life Spheres without relying on Massive Sanguification.
Walk a Tightrope	>	HP Collector	Sacrifices some Firearm ATK and Skill Power for consistent HP recovery.
Battle of Stamina	>	HP Amplification	Lowers Skill Duration in exchange for increased HP.

Since you will be fighting multiple enemies instead of just a single boss, you can reduce your overall damage output in exchange for quality-of-life modules and additional survivability for a more efficient run. You don't need to rely solely on Massacre to finish off enemies, as you can still clear groups with just your main weapon.

Best Gley Weapons and Weapon Modules (Hard)

Weapon	Substat Priority
Python	• Bonus Firearm ATK Colossus (vs. Colossus) • Recoil • Hip Fire Accuracy • Weak Point Damage
Vestigial Organ (Optional)	• Explosive ATK • Attribute Status Effect Trigger Rate • Recoil • Any Elemental ATK

When using your Massacre ability, you will benefit from the Fire Rate, Critical Hit Chance, Critical Hit Damage, Recoil, Accuracy, and Attribute Effect Trigger Rate of your current weapon. Although the Python has low Critical Hit Rate and high Recoil, its Fire Rate and your character modules compensate for the damage since Massacre scales off Non-Attribute Skill Power and Dimensional Skill Power. Therefore, the best weapon for killing bosses is the Python due to its exceptional Fire Rate. With this much Fire Rate, your Massacre ability, combined with the infinite ammo buff, allows you to burst down bosses in a flash.

Alternatively, if you are just clearing mobs, you don’t need the high damage from your Massacre ability. Instead, you can use Vestigial Organ for powerful AOE damage, which is perfect for clearing mobs. It has the best fire rate among all launchers available in the game, and you can pair it with the infinite ammo buff using Increased Sensory to bypass the reload time.

Best Weapon Modules

More Modules can be seen by scrolling horizontally.

For your weapon modules, focus on stacking stats that carry over to your Massacre ability. This means you don't need to prioritize Firearm ATK and Magazine Capacity modules. The most important module for your weapon is Fire Rate Up, which significantly increases your damage output. Additionally, stack Recoil and Accuracy stats to make it easier to land your shots, especially when targeting the boss from a distance.

You can replace Electric Enhancement with other Bullet Improvement modules depending on the boss's weaknesses for better Elemental ATK damage.

Best Weapons Tier List

Best Gley Equipment (Hard)

Equipment	Substat Priority
Materialized Phase Reactor	• Skill Cooldown • Skill Duration Up • Dimension Skill Power Boost Ratio • Non-Attribute Skill Power Boost Ratio
Annihilation Auxiliary Power	• Fire Resistance • Max HP • Kuiper Shard Drop Rate Increase Modifier • Module Drop Rate Increase Modifier
Annihilation Sensor	• Chill Resistance • Consumable Drop Rate Increase Modifier • HP Recovery Modifier
Annihilation Memory	• Electric Resistance • DEF • Firearm Proficiency Gain Modifier • Gold Drop Rate Increase Modifier
Annihilation Processor	• Toxic Resistance • Ecive Display Time • Item Acquisition Distance Increase Modifier

Note that External Components with set bonuses have fixed main stats.

For your Reactor, it's highly recommended to boost the stats for your Dimensional and Non-Attribute Skills to further increase the damage of your Massacre. However, if you still lack cooldown reduction and skill duration for 100% uptime on Increased Sensory, you can prioritize those substats over damage for consistency.

As for External Component, since your abilities use HP instead of MP, you can fully utilize the effects of the Annihilation Set easily, as your health will often be below 50%. For substats, MP and Shield are not beneficial, so focus on stacking Resistances and Defense for better survivability. Alternatively, you can replace these substats with drop rate modifiers if you want to prioritize faster farming.

List of Reactors

List of External Components

Gley Playstyle Tips

Gley Playstyle Tips
Turn Off Frenzy When Healing Use Increased Sensory After Casting Massacre

Turn Off Frenzy When Healing

To maintain your health during fights, ensure you deactivate Frenzied before picking up Health Consumables, Life Spheres, or using Massive Sanguification to avoid the Recovery Penalty associated with Frenzied. Additionally, you can activate Increased Sensory while Frenzied is off to increase the generation rate of Life Spheres when killing enemies.

Use Increased Sensory After Casting Massacre

When using Massacre, each shot you fire will deal exceptional damage but is limited by the number of Life Spheres you have. Follow up with Increased Sensory while Frenzied to activate the Maximum Lethality buff, which grants your Massacre infinite ammo for a few seconds. Keep in mind that during Maximum Lethality, your movement speed is reduced by half, making it more challenging to dodge, especially when avoiding AOE attacks from Bosses.

Best Gley Builds for Normal Mode

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Descendant Modules	Weapon and Modules
Best Reactor	Best External Components
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Best Gley Modules (Normal)

Best Gley Modules
HP Collector	When defeating an enemy, instantly recovers X% of Max HP (Cooldown Xs).
Focus on Non-Attribute	Non-Attribute Skill Power +X%, Skill Cooldown -X%
Maximize Duration	Skill Duration +X%, Skill Power Modifier -X%
MP Conversion	Skill Cooldown -X%, Max MP -X%
HP Amplification	Max HP +X%, Max Shield -X%
Kicking	Modifies the Charged Sub Attack. Use a Kick to attack when performing a Charged Sub Attack. As the Enhancement Level Increases, Max Module Capacity increases. (Currently +X)
Skill Extension	Skill Duration +X%, applies only to certain skills for each Descendant
Increased HP	Max HP +X%
Nimble Fingers	Skill Cooldown -X%

This Gley build is designed to increase her maximum HP to enhance her survivability and deal more damage with Massacre and Life Siphon. Additionally, you will also be stacking Skill Cooldown and Skill Duration to utilize the effects of Increased Sensory.

With Gley, you can pick up the double-edge modules that drastically increase your HP but negatively impact your Shield or MP. Since Gley's passive ability, Thirst, prevents her from having those stats, you will be able to completely avoid the downside of these modules.

Modules Guide: List of Modules

Best Gley Weapon and Modules (Normal)

Weapon		Stat Priority
Thunder Cage		・Firearm ATK ・Firearm Critical Hit Damage ・Firearm Critical Hit Rate ・Weak Point Damage
Best Modules for Thunder Cage
Sweeping Squad	When defeating an enemy, Firearm ATK +X% for Xs at a X% chance (up to X Stacks).
Rapid Fire Insight	Fire Rate +X%, Firearm Critical Hit Rate +X%
Insight Support Ammo	Rounds per Magazine +X%, Firearm Critical Hit Rate +X%
Insight Focus	Firearm Critical Hit Rate +X%, Firearm Critical Hit Damage +X%
Weak Point Insight	Weak Point Damage +X%, Firearm Critical Hit Rate +X%
Sharpshooter	Firearm ATK +X%, Firearm Critical Hit Rate +X%
Weak Point Sight	Weak Point Damage +X%
Better Concentration	Firearm Critical Hit Damage +X%
Better Insight	Firearm Critical Hit Rate +X%
Rifling Reinforcement	Firearm ATK +X%

This weapon's unique ability, Overcharge, has a chance to discharge an Electric Shockwave, helping you clear groups of enemies. Since Gley can have infinite ammo, you can easily utilize this effect by shooting grouped enemies to clear the area.

Your modules should mainly stack Critical Hit Rate and Firearm ATK to maximize the effects of the bonus Firearm ATK with Frenzied and infinite ammo when activating Increased Sensory.

Best Weapons Tier List

Best Gley Reactor (Normal)

Reactor	Stat Priority
Materialized Phase Reactor	・Skill Cooldown ・Skill Duration Up

It is better to get the Phase Reactor to obtain bonuses for your Dimensional Skills since Massacre and Life Siphon are the only two skills that can scale from Skill Power. Getting a Singularity Reactor will still provide the base Skill Power, but the effects of Frenzied and Increased Sensory will remain the same.

Reactors Guide: List of Reactors

Best Gley External Components (Normal)

Set	Set Effect
Veteran Marksman Set	2-Set Effect: ・Firearm Critical Rate +5.1% 4-Set Effect: ・Firearm ATK +6.6% ・Weak Point DMG +5.8%
Substat Priority
Auxiliary Power	・Max HP ・Fire Resistance
Sensor	・Chill Resistance ・Consumable Drop Rate Increase Modifier
Memory	・DEF ・Electric Resistance
Processor	・Item Acquisition Distance Increase Modifier ・Toxic Resistance

Since you will be targeting the enemy's weak points during Void Intercept Battles, the Veteran Marksman Set is one of the best early-game external components. Additionally, it provides Firearm Critical Hit Rate and Firearm ATK, both of which are useful in any situation.

External Components Guide

How to Unlock Gley

Unlock Using the Research Institute

Research Time	Cost
16:00:00	400,000

Required Research Material	How to Get
Gley Code x1	・Intercept Battle: (Common) (Grave Walker) Amorphous Material Pattern: 002 required ・ Intercept Battle: (Hard) (Dead Bride) Amorphous Material Pattern: 069 required ・ Intercept Battle: (Hard) (Molten Fortress) Amorphous Material Pattern: 124 required ・ Agna Desert (Hard) - Abyssal Void Fusion Reactor - Agna Desert Miragestone Deposit
Gley Enhanced Cells x1	・Research Research Materials Needed: ・Monad Shard x246 ・Silicon x430 ・Cooling Metallic Foil x38 ・Gley Enhanced Cells Blueprint x1
Gley Spiral Catalyst x1	・Research Research Materials Needed: ・Nanopolymers x363 ・Ceramic Composite x408 ・Synthesized Artificial Biometal x99 ・Gley Spiral Catalyst Blueprint x1
Gley Stabilizer x1	・Research Research Materials Needed: ・Metal Accelerant x519 ・Flectorite x292 ・Complex Carbon Activator x60 ・Gley Stabilizer Blueprint x1

You can unlock Gley through the Research Institute in Albion. Note that to acquire a Descendant using research, you need all the required items and gold to unlock this character.

Research Institute

Purchase Gley Using Caliber

Alternatively, you can unlock Descendants by purchasing them in the Shop. This method only requires Caliber, an in-game currency that you can buy with real money. Purchasing Gley in the Shop instantly unlocks the Descendant, allowing you to skip the item requirements and research time.

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Gley Basic Info & Stats

Gley Basic Info
Gley Hope Seeker	Role	Utility Dealer
	Element	Non-Attribute
Description
"A dealer who becomes stronger the more she gnaws on herself. Unleashes the rage inside her to quickly subdue her enemies."

Stats

DEF	Max Shield	Shield Recovery	Max MP	Max HP
2325	0	0	0	1651

Gley Skills

Passive Skills

Skill	Type Effect
Thirst	Creates Life Spheres upon killing enemies. Recovers HP and stores Power of Life when absorbing Life Spheres.

Active Skills

Skill	Type Effect
Frenzied	Singular Consumes HP to enter Berserk mode. In Berserk mode, long distance weapon’s ATK and Penetration increase.
Life Siphon	Dimension Deals damage to nearby enemies and restores HP. In Berserk mode, damage increases; in Normal mode, damage inflicted by enemies decreases for a certain period of time.
Increased Sensory	Singular Her Increased Sensory adds an infinite ammo effect for a certain amount of time during Frenzy, and when in a Non-Frenzied state, increases Movement Speed and HP Recovery during which Life Sphere generation is increased.
Massacre	Dimension Changes current Firearm to Massacre. Adds additional skill damage during Frenzied state, and inflicts Stun effect on hit enemies.

Gley Exclusive Equipment

Variable Arche Firearm 'Massacre'

Creating a weapon that suits Gley, the only being who can use Arche, as well as switch between the genetic structures of humans and Magisters, was a serious challenge. The main issue was deciding the basis for the output point, and while both Anais and Deslin suggested creating the weapon based on when she's in human form, Gley was adamantly against it. She wanted a weapon that would allow her to slaughterher enemies, even if it meant it ate away at her own life. After much wrangling, the output point was set based on when Gley was in a frenzy. When she finally received the weapon, Gley wordlessly stared at it for a long time before slipping it into her holster and leaving.

Gley Skins

Jump to a Skin type!
Head	Body	Back
Chest	Ecive	Full Body
Grappling Hook	Make Up	Spawn

All Gley Head Skins

Gley's Albion Academy Cadet	Gley's Classic Maid Uniform	Gley's Intensive Care Subject
Life Detection Goggles	Grace	Dignity

All Gley Body Skins

Gley's Albion Academy Cadet	Gley's Classic Maid Uniform	Gley's Intensive Care Subject
Night Fog	Night Clinic

All Gley Back Skins

Baby Panda	Ammo Supply Box	White Rabbit Doll
Bear Cub	Satellite	Albion Rocket
Planetary Projector	Rocket Jet Pack	Double Z Wing
Run, Hamster	Advanced Material Backpack	Pink Salamander
Firefighting Tank

All Gley Chest Skins

Small Flashlight	HQ Access Card	Old Teddy Bear
Bunny-Ears Strap	Dynamite	Brave Squirrel
Emote Tag	Magister Researcher	Mark of Albion
Recorder

All Gley Ecive Skins

Continuity	Bio Scan	Heart

All Gley Full Body Skins

Panda's Adventure

Dinosaur Pajamas

All Gley Grappling Hook Skins

Special Supply

Advanced Material Engineering

All Gley Make Up Skins

Autumn	Autumn Leaves	Mysterious

All Gley Spawn Skins

Magical Moment	Passion	Dismantling and Fusion
Snowman	Beyond the Unknown	Thunder and Lightning
Gale	Big Water Bomb	Wrong Direction

The First Descendant Related Guides

List of All Characters

All Base Characters

Ajax	Blair	Bunny
Enzo	Esiemo	Freyna
Gley	Hailey	Jayber
Kyle	Lepic	Luna
Sharen	Valby	Viessa
Yujin	-	-

All Ultimate Characters

Ultimate Ajax	Ultimate Bunny	Ultimate Freyna
Ultimate Gley	Ultimate Lepic	Ultimate Valby
Ultimate Viessa	-	-

Character Guides

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