Ajax Builds and How to Unlock

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

Jump to a section!
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
Stim Accelerant	>	Battle of Stamina	Recommended for bossing as this extends the duration of Shield Barrier skills.
Strong Mentality	>	Focus 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
Weighing the Scales	>	HP 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
Tamer (For Bossing)	• Round Per Magazine • Bonus Firearm ATK Colossus (vs. Colossus) • Firearm ATK • Weak Point Damage
Thunder 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
Materialized Mechanics Reactor	• Non-Attribute Skill Power Boost Ratio • Tech Skill Power Boost Ration • Skill Duration Up
Annihilation Auxiliary Power	• Max HP • Fire Resistance
Annihilation Sensor	• MP Recovery in Combat • Max MP
Annihilation Memory	• Def • Electric Resistance • MP Recovery Multiplier
Annihilation 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 Facetank Damage While Attacking a Boss Use Void Walk for Crowd Control

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	When defeating an enemy, instantly recovers X% of Custom Resources at a X% chance. Characters with Custom Resources - Ajax - Bunny - Gley - Kyle
Iron Defense	DEF +X%, Skill Power Modifier +X%
Focus on Non-Attribute	Non-Attribute Skill Power +X%, Skill Cooldown -X%
Dual 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	Dimension Skill Power Modifier +X%
Skill Expansion	Skill Effect Range +X%, applies only to certain skills for each Descendant
Increased DEF	DEF +X%
Increased HP	Max HP +X%
Strong Mentality	Skill Cost -X%
Nimble 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
Greg'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	When defeating an enemy, Firearm ATK +X% for Xs at a X% chance (up to X Stacks).
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%
Action and Reaction	Firearm ATK +X%, Recoil +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%

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	・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
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

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
Ajax The Liberated Guardian	Role	Tank
	Element	Non-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
Event 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
Orbit Barrier	Dimension Creates a shield in front of Ajax. Durability increases proportionally to Ajax’s HP and DEF.
Void Walk	Tech Leaps into the air and lands on the ground to strike nearby enemies, stunning them.
Expulsion	Tech Strikes nearby enemies, knocking them back.
Hypercube	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

Attention!	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

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

Character Guides
List of All Builds	List of All Ultimate Descendants
All Character Skins	-