The First Descendant

Ajax Builds and How to Unlock

Beginner's Guide and Advanced Tips and Tricks
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First Descendant - Ajax

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

All Ajax Guides
Ajax Builds Ultimate Ajax Builds

Best Ajax Build for Hard Mode

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Descendant Modules Weapons and Modules
Reactor and External Components Playstyle Tips
▼Jump to Normal Mode Build▼

Ajax Hard Mode Build Showcase

Check out how much damage Ajax can take using our high HP and DEF build!

Best Ajax Modules (Hard)

More Modules can be seen by scrolling horizontally.

This build primarily focuses on tanking damage from bosses and mobs by using modules that greatly increase HP and Defense. You will also be adding a bit of Shields to benefit from Overwhelming HP, since that module basically converts Shields into HP, further boosting Ajax's max health even more.

This set-up also allows Ajax to frequently deploy his Shield Barrier skills as the Nimble Fingers and Time Distribution modules will reduce their skill cooldowns, giving you more chances to summon your defensive barrier skills to defend yourself and your allies.

Modules Guide: List of Modules

Alternative Descendant Module for Bosses

Module Change Explanation
The First Descendant - Stim AccelerantStim Accelerant > The First Descendant - Battle of StaminaBattle of Stamina Recommended for bossing as this extends the duration of Shield Barrier skills.
The First Descendant - Strong MentalityStrong Mentality > The First Descendant - Focus on Non-AttributeFocus on Non-Attribute Increases Skill Power and reduces Skill Cooldowns.

These alternative modules provide you with more Skill Power and Skill Duration in exchange for Skill MP consumption. These are mostly recommended for bossing where you will want to extend the duration of your Shield Barriers to deflect projectiles from bosses.

Descendant Module Substitutes for Mobbing

Module Change Explanation
The First Descendant - Weighing the ScalesWeighing the Scales > The First Descendant - HP CollectorHP Collector Recommended for mobbing as it recovers HP after defeating an enemy.

For mobbing, you will want the HP Collector since it lets you recover some HP after defeating an enemy, allowing you to tank larger mobs with excellent survivability.

Best Ajax Weapons and Weapon Modules (Hard)

Weapon Substat Priority
The First Descendant - TamerTamer
(For Bossing)
• Round Per Magazine
• Bonus Firearm ATK Colossus (vs. Colossus)
• Firearm ATK
• Weak Point Damage
The First Descendant - Thunder CageThunder Cage
(For Mobbing)
• Skill Critical Hit Rate
• Skill Critical Hit Damage
• Skill Effect Range
• Skill Cost

Best Weapon Modules

More Modules can be seen by scrolling horizontally.

For Tamer, you'd want to equip modules that focuses on Weak Point Damage to exploit the weaknesses of the bosses in the colossus. The other modules will also increase its Firearm ATK, Critical Hit Rate and Damage, further strengthening the Tamer and ensure more damage against Void Intercept bosses.

These are not only limited to bossing, but for mobbing as well with the Thunder Cage. The same idea applies, with increasing Firearm ATK and Critical Hit Rate, you will be breezing through mobs with your weapon's excellent firepower.

Best Weapons Tier List

Best Ajax Equipment (Hard)

Equipment Substat Priority
The First Descendant - Materialized Mechanics ReactorMaterialized Mechanics Reactor • Non-Attribute Skill Power Boost Ratio
• Tech Skill Power Boost Ration
• Skill Duration Up
The First Descendant - Annihilation Auxiliary PowerAnnihilation Auxiliary Power • Max HP
• Fire Resistance
The First Descendant - Annihilation SensorAnnihilation Sensor • MP Recovery in Combat
• Max MP
The First Descendant - Annihilation MemoryAnnihilation Memory • Def
• Electric Resistance
• MP Recovery Multiplier
The First Descendant - Annihilation ProcessorAnnihilation Processor • Max Shield
• Toxic Resistance

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

The Annihilation Set will increase the damage of your weapon in proportion to the HP you lost. This won't be a problem as it is easily mitigated due to the build's Max HP and DEF. To add to this, the set lets you recover HP at a faster rate, granting you more survivability and to tank for your teammates longer.

The weapon damage increase is important to Ajax since the majority of the damage of this build will come from weapons. Thus, we highly recommend using a good Machine Gun such as the Tamer, as well as a viable SMG such as the Thunder Cage.

List of Reactors List of External Components

Ajax Playstyle Tips

Ajax Playstyle Tips


Deploy the Orbit Barrier at the Right Time

The Orbit Barrier not only shields yourself from harm, but also reflects damage against enemies attacking you. Bosses and mobs usually have a short wind-up animation before firing at you, so you can use that to properly time your barrier shield skill.

You can also use this to revive a fallen ally. If ever a boss has its attention on you, you can deploy the Orbit Barrier as protection while you safely revive your teammate.

Facetank Damage While Attacking a Boss

With the Annihilation Set equipped, your damage will increase the more HP that you lose. Take advantage of this by taking damage from the boss's attacks while firing at them.

If you followed our build, you should have more than enough HP to survive attacks a lot longer than usual.

Use Void Walk for Crowd Control

In Hard mode, mobs will take a longer time to kill, giving them more chances to form into large groups. When this happens, use Void Walk to leap up in the air and slam yourself on the ground to kill multiple enemies in one blow.

Best Ajax Builds for Normal Mode

Jump to a Section!
Best Modules Best Weapon and Modules
Best Reactor Best External Components
▲Jump to Hard Mode Builds▲

Best Ajax Modules (Normal)

Best Ajax Modules
Potent Collector ImagePotent Collector When defeating an enemy, instantly recovers X% of Custom Resources at a X% chance. Characters with Custom Resources - Ajax - Bunny - Gley - Kyle
Iron Defense ImageIron Defense DEF +X%, Skill Power Modifier +X%
Focus on Non-Attribute ImageFocus on Non-Attribute Non-Attribute Skill Power +X%, Skill Cooldown -X%
Dual Claw ImageDual Claw Modifies the Charged Sub Attack. Use a Dual Claw to attack when performing a Charged Sub Attack. As the Enhancement Level increases, Max Module Capacity increases. (Currently +X)
Dimension Specialist ImageDimension Specialist Dimension Skill Power Modifier +X%
Skill Expansion ImageSkill Expansion Skill Effect Range +X%, applies only to certain skills for each Descendant
Increased DEF ImageIncreased DEF DEF +X%
Increased HP ImageIncreased HP Max HP +X%
Strong Mentality ImageStrong Mentality Skill Cost -X%
Nimble Fingers ImageNimble Fingers Skill Cooldown -X%

The selected modules focus on boosting your skill's Power, Cost, Cooldown, and Range. These Modules also improve your survivability and will capitalize on increasing your DEF to maximize your Orbit Barrier.

This is a balanced build for Ajax that works for mob-clearing, crowd-control, boss DPS, and defending your teammates and mission objectives. This is also a great build to survive harder Void Intercept Battles, allowing you and your team to continuously apply DPS on bosses.

Modules Guide: List of Modules

Best Ajax Weapon and Modules (Normal)

Weapon Stat Priority
The First Descendant - GregGreg's Reversed Fate ・Firearm ATK
・Firearm Critical Hit Damage
・Firearm Critical Hit Rate
・Weak Point Damage
Best Modules for Greg's Reversed Fate
Sweeping Squad ImageSweeping Squad When defeating an enemy, Firearm ATK +X% for Xs at a X% chance (up to X Stacks).
Insight Support Ammo ImageInsight Support Ammo Rounds per Magazine +X%, Firearm Critical Hit Rate +X%
Insight Focus ImageInsight Focus Firearm Critical Hit Rate +X%, Firearm Critical Hit Damage +X%
Weak Point Insight ImageWeak Point Insight Weak Point Damage +X%, Firearm Critical Hit Rate +X%
Sharpshooter ImageSharpshooter Firearm ATK +X%, Firearm Critical Hit Rate +X%
Action and Reaction ImageAction and Reaction Firearm ATK +X%, Recoil +X%
Weak Point Sight ImageWeak Point Sight Weak Point Damage +X%
Better Concentration ImageBetter Concentration Firearm Critical Hit Damage +X%
Better Insight ImageBetter Insight Firearm Critical Hit Rate +X%
Rifling Reinforcement ImageRifling Reinforcement Firearm ATK +X%

We went with Greg's Reversed Fate as the best weapon for Ajax due to its unique ability to call bombardments, adding mob-clearing potential for Ajax. Since this build for Ajax mainly focuses on defense and crowd control, the main damage source will be from the weapons.

The weapon's modules focus on Critical Hit Rate, Weak Point Damage, and Firearm ATK to instantly kill mobs, and deal high DPS to bosses.
You can also use the Tamer which is a great weapon for mob-clearing and Void Bosses to accompany Greg's Reversed Fate.

Best Weapons Tier List

Best Ajax Reactor (Normal)

Reactor Stat Priority
Materialized Phase Reactor ImageMaterialized Phase Reactor ・Skill Power
・Sub Attack Power
・Non-Attribute Skill Boost Ratio
・Dimension Skill Boost Ratio
・Tech Skill Boost Ratio

Using a Materialized Phase Reactor will give you the most bonus effects since most of Ajax's abilities are Non-Attribute and Dimension skills. For the substats, try to look for Non-Attribute Skill Boost Ratio and Tech Skill Boost Ratio or Dimension Skill Boost Ratio to improve the effectiveness of your skills.

Reactors Guide: List of Reactors

Best Ajax External Components (Normal)

Set Set Effect
The First Descendant - Tomb VanguardThe First Descendant - Tomb VanguardThe First Descendant - Tomb VanguardThe First Descendant - Tomb Vanguard
Tomb Vanguard Set
2-Set Effect:
・Def +25%
4-Set Effect:
・Skill Power +2.6%
・Electric Resistance +6.6%
Substat Priority
Auxiliary Power ・Max HP
・DBNO Duration
Sensor ・Max MP
・Shield Recovery Out of Combat
Memory ・DEF
・Electric Resistance
Processor ・Max Shield
・Shield Recovery Modifier

The Tomb Vanguard Set should increase your defense enough to withstand incoming damage in Normal Mode. It also enhances Skill Power to further increase damage of Ajax's Expulsion and Void Walk skills.

This set is also easily obtainable early in the game, as it's one of the drops from Grave Walker (Common Difficulty).

List of External Components

How to Unlock Ajax

Unlock Using the Research Institute

Research Time Cost
16:00:00 400,000
Required Research Material How to Get
Ajax Code x1 ・Intercept Battle: (common) Executioner - Amorphous Material Pattern: 019 required
・ (Hard) Swamp Walker - Amorphous Material Pattern: 096 required
・ Vespers (Hard) - Abysall Void Fusion Reactor - Vespers Moonlight Lake complete
・ White-night Gulch (Hard) - Abyssal Void Fusion Reactor - White-night Gulch Hatchery complete
Ajax Enhanced Cells x1 ・Research
Research Materials Needed:
Silicon x430
Hellion x303
Artificial Biometal x35
Ajax Enhanced Cells Blueprint x1
Ajax Spiral Catalyst x1 ・Research
Research Materials Needed:
Compound Coating Material x239
Shape Memory Alloy x462
Positive Ion Particle x42
Ajax Spiral Catalyst Blueprint x1
Ajax Stabilizer x1 ・Research
Research Materials Needed:
Hardener x386
Ceramic Composite x408
Compound Carbon Activator x30
Ajax Stabilizer Blueprint x1

You can unlock Ajax 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 Ajax Using Caliber

Purchase Descendants 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 Ajax in the Shop instantly unlocks the Descendant, allowing you to skip the item requirements and research time.

All Microtransactions

Ajax Basic Info & Stats

Ajax Basic Info
The First Descendant - Ajax IconAjax

The Liberated Guardian
Role Tank
Element
The First Descendant - Non-Attribute IconNon-Attribute
Description
"A tanker who utilizes Void Energy. He leads the team with a Forcefield that protects allies while deflecting enemy attacks."

Stats

DEF Max Shield Shield Recovery Max MP Max HP
6291 516 4.88 187 1749

Ajax Skills

Passive Skills

Skill Type
Effect
The First Descendant - Event Horizon IconEvent Horizon Acquires Void Energy after using skills. When the Void Energy reaches its maximum amount, it enhances skills and grants additional effects.

Active Skills

Skill Type
Effect
The First Descendant - Orbit Barrier IconOrbit Barrier
The First Descendant - Dimension Icon Dimension

Creates a shield in front of Ajax. Durability increases proportionally to Ajax’s HP and DEF.
The First Descendant - Void Walk IconVoid Walk
The First Descendant - Tech Icon Tech

Leaps into the air and lands on the ground to strike nearby enemies, stunning them.
The First Descendant - Expulsion IconExpulsion
The First Descendant - Tech Icon Tech

Strikes nearby enemies, knocking them back.
The First Descendant - Hypercube IconHypercube
The First Descendant - Dimension Icon Dimension

Creates a dome-shaped shield. Durability increases proportionally to Ajax’s HP and DEF.

Ajax Exclusive Equipment

Raley MK.5 Void Energy Battlesuit

The Raley MK.5 Void Energy Battlesuit, named after 'Raley,' the first-ever Descendant, is a military suit developed to explore the Void. A decade later, these suits may be outdated, but as the only remaining suit of this series, it is the perfect equipment for the Descendant known as Ajax, despite it being defective.

Although the suit was damaged, it had absorbed enough Void Energy for Ajax to allow him to manipulate the Void Energy adeptly, by incorporating it into his own spatial theories and Arche. It may have been the cause of Ajax's mishap in the Void, but now it is an impregnable shield that provides powerful barriers and channels kinetic energy."

Ajax Skins

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

All Ajax Head Skins

Ajax's Undisclosed Project Special Barrier Dark Matter
Prototype Neural Sharing

All Ajax Body Skins

Ajax's Undisclosed Project Dark Matter Prototype
Neural Network

All Ajax 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 Ajax 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 Ajax Ecive Skins

Continuity Bio Scan Heart

All Ajax Full Body Skins

Panda's Adventure Dinosaur Pajamas

All Ajax Grappling Hook Skins

Special Supply Advanced Material Engineering

All Ajax Make Up Skins

The First Descendant - ChillAttention! This character has no skins of this kind.

All Ajax 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

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List of All Characters

All Base Characters

The First Descendant - Ajax.pngAjax The First Descendant - Blair.png Blair The First Descendant - Bunny.pngBunny
The First Descendant - Enzo.pngEnzo The First Descendant - Esiemo.pngEsiemo The First Descendant - Freyna.pngFreyna
The First Descendant - Gley.pngGley The First Descendant - Hailey IconHailey The First Descendant - Jayber.pngJayber
The First Descendant - Kyle.pngKyle The First Descendant - Lepic.pngLepic The First Descendant - Luna IconLuna
The First Descendant - Sharen.pngSharen The First Descendant - Valby.pngValby The First Descendant - Viessa.pngViessa
The First Descendant - YujinYujin - -

All Ultimate Characters

The First Descendant - Ultimate AjaxUltimate Ajax The First Descendant - Ultimate BunnyUltimate Bunny The First Descendant - Ultimate Freyna IconUltimate Freyna
The First Descendant - Ultimate GleyUltimate Gley The First Descendant - Ultimate LepicUltimate Lepic Ultimate Valby IconUltimate Valby
The First Descendant - Ultimate ViessaUltimate Viessa - -

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