Ultimate Guide to Ajax Build in The First Descendant: Skills, Weapons, Reactor & Modules

In The First Descendant, Ajax stands out as an exceptional Tank and Support character, equipped with powerful crowd control capabilities essential for dominating combat scenarios. After extensive testing, we’ve crafted an optimal build for you to explore.

Despite his strengths, one major drawback of Ajax is his limited damage output. His offensive options are somewhat constrained, making him less favorable in situations demanding high DPS. Nevertheless, he secures a prominent position in our tier list as a Tank/Support character.

Here’s our guide to the top Ajax build in The First Descendant, including skills, weapons, reactors, and modules to utilize.

The First Descendant: Best Ajax Build – Recommended

Best Ajax Skills

Ajax’s potential is contingent upon the synergistic use of his skills. The optimal skills for Ajax’s build in The First Descendant include:

Hypercube

Hypercube is Ajax’s most effective Active Skill.

This skill creates a dome-shaped shield around Ajax, which allies can also utilize. The shield’s durability scales with Ajax’s health, making it particularly advantageous against overwhelming enemy forces. Furthermore, its enhanced version reflects incoming damage back at adversaries who strike the barrier.

Expulsion

While Ajax may lack remarkable offensive capabilities, he can still play a significant role in setting up damage for teammates.

Expulsion hits all nearby enemies, pushing them back and establishing crucial space in The First Descendant. When enhanced, the skill increases knockback distance and enhances Ajax’s Max Shield.

All Skills

Here’s a complete breakdown of Ajax’s skills:

Event Horizon (Passive): Accumulates Void Energy from skill usage. When at maximum, it enhances skills and adds additional effects.
Orbit Barrier: Generates a shield in front of Ajax that increases durability based on Ajax’s HP and DEF. When enhanced, it reflects damage proportional to DEF to enemies that attack the barrier.
Void Walk: Ajaxes leaping ability that allows him to land and stun nearby foes. Enhanced usage increases Max Shield for a short duration.
Expulsion: Strikes nearby enemies, causing them to be knocked back. Enhanced use boosts knockback range and Max Shield.
Hypercube: Creates a dome-shaped shield, with durability scaling according to Ajax’s HP and DEF. The enhanced version reflects damage back at attackers proportionally to DEF.

Best Weapons for Ajax

Albion Cavalry Gun in The First Descendant — Nexon/dexerto

The most effective weapons for Ajax in The First Descendant include:

Albion Cavalry Gun
Secret Garden (Tactical Rifle)
Tamer (Machine Gun)

The Albion Cavalry Gun is the top pick as it complements Ajax’s skill set perfectly, providing extra damage against stunned enemies.

This firearm’s Unique Ability boosts Firearm ATK when hitting a stunned enemy, and critical hits on stunned foes also inflict further stun. Pairing this with Ajax’s Void Walk skill can result in widespread stuns within its area, enhancing the gun’s destructive potential.

Secret Garden and Tamer serve as excellent alternatives, enhancing stats when used with skills, while Tamer is especially effective during boss fights.

Best Reactors for Ajax in The First Descendant

Best reactor to choose in The First Descendant — Nexon Games

The Materialized Mechanics Reactor is a solid choice, enhancing Tech abilities.

We recommend the following reactors to maximize Ajax’s effectiveness:

Materialized Mechanics: Boosts Tech and Non-Attribute, enhancing Skill Power ratios for skills.
Materialized Phase: Enhances Non-Attribute and Dimension, which benefits Ajax’s Barrier abilities.

Since Ajax’s barrier skills are Dimensional, while his other skills fall under Tech, keep this in mind when selecting reactors.

Best Modules for Ajax

The optimal modules available for Ajax are:

Slot	Module	Description	Quality
1 (Skill Module)	Matrix Recomputation	Expulsion grants allies a survivability buff	Transcendent
2	Shield Conversion MP	Increases Max MP and reduces Max Shield	Rare
3	Increased DEF	Large buff to DEF stats	Normal
4	Increased HP	Large buff to overall HP pool	Normal
5	Increased Shield	Large buff to Max Shield	Normal
6	Skill Expansion	Improves Skill area of effect	Normal
7 (Sub Module)	Dual Claw	Sub attack becomes Dual Claw, increasing module capacity	Normal
8	DEF Accelerator	Increases skill duration and overall DEF	Rare
9	Skill Range Mastery	Improves Critical Hit damage from Skills	Rare
10	Tech Specialist	Enhances the efficacy of Tech skills	Normal
11	Resist Module	N/A	N/A
12	Resist Module	N/A	N/A

Matrix Recomputation modifies Expulsion to offer a buff that enhances allies’ survivability, enabling Ajax to provide substantial support to the team.

Tech Specialist boosts the power of Ajax’s Void Walker and Expulsion offensive abilities, while the other modules solidify Ajax’s defenses and support capabilities, enhancing everything from HP to Shields.

The final two modules are specifically for elemental resistances, which can significantly boost your chances of success in challenging battles.

Best External Components

Ajax in The First Descendant — Nexon/dexerto

External Components can be among the grind-heavy elements in The First Descendant, where significant benefits can come down to RNG. The most essential components for Ajax focus on boosting:

Max HP
Max Shield
DEF

Be prepared to endure numerous unproductive rolls before landing the desired components, as they are crucial “looter shooter” aspects of the game.

Ajax Pros and Cons

PROS	CONS
Offers exceptional tank capabilities with impressive defensive support for teams.	His tanking efficiency demands careful energy management, which may be challenging for newcomers.
Creates barriers that protect allies and deflect enemy projectiles.	Barriers may not be effective against all enemy types or in every combat scenario.
Contributes significantly to team dynamics during missions as a support character.	Not suited for solo play; heavily relies on team coordination.
Ideal for team engagements.	Underwhelms in scenarios demanding high single-target damage output.

Where Does Ajax Rank Against Other Characters?

Ajax holds a high S-tier ranking in our September 2024 tier list following significant buffs from the latest Season 1 update. His abilities, “Orbit Barrier” and “Hypercube” , have been enhanced to incorporate attribute resistances, with substantial boosts to their HP and DEF ratios.

Improvements to his Void Walk and Void Charge skills make Ajax an excellent choice for new players. He ranks alongside other effective characters like Bunny, Lepic, and Valby, all of whom excel at clearing mobs and ensuring rapid mission completion.

How to Unlock Ajax

Similar to most Descendants, unlocking Ajax requires specific items and crafting resources. The necessary materials are:

Ajax Enhanced Cells:

x430 Silicon
x303 Hellion
x35 Artificial Biometal
Ajax Enhanced Cell Blueprints
x200,000 Gold

Ajax Stabilizer:

x386 Hardener
x408 Ceramic Composite
x30 Compound Carbon Activator
Ajax Stabilizer Blueprint
x200,000 Gold

Ajax Spiral Catalyst:

x402 Compound Coating Materials
x462 Shape Memory Alloy
x42 Positive Ion Particle
Ajax Spiral Catalyst Blueprint
x200,000 Gold

Ajax Code:

Intercept Battle: Executioner: Amorphous Material Pattern 019 required
Intercept Battle: Swamp Walker: Amorphous Material Pattern 096 required
Vespers: Abyssal Void Fusion Reactor: Vespers Lost Moonlight Lake
White-night Gulch: Void Fusion Reactor: White-night Gulch Hatchery

For a comprehensive guide on how to unlock him in The First Descendant, refer to our dedicated resource.

Should I Play as Ajax?

Ajax is perfect for players who favor tank roles. His defensive abilities and damage reflection provide a unique gameplay experience, particularly for those who enjoy being in the midst of combat, guiding engagements, and safeguarding teammates.

His skills, featuring spatial manipulation and energy management, are attractive for players seeking characters with innovative mechanics that extend beyond merely dealing damage.

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