Ajax’s best build option makes him one of the best frontlines in The First Descendant. He is incredibly tanky and is considered by most to be one of the best Descendants in the game.
However, Ajax is not entirely beginner-friendly like Lepic who is another started Descendant in the shooter. This is because he comes with a Void Energy mechanic which changes the properties of some of his abilities when you charge up the meter.
Gauge management is key when it comes to mastering him and the guide below will go over the best build that you can try on Ajax in The First Descendant.
How to unlock Ajax in The First Descendant
In order to get your hands on Ajax, you will be required to either select him at the start of the game, unlock him for 300 Caliber from the store, or craft him after talking to Anais.
If you are crafting him, here is everything you will need:
Items | Materials | How to Farm |
---|---|---|
Ajax Enhanced Cells | Silicon x430 Hellion x303 Artificial Biometal x303f Ajax Enhanced Cell Blueprint 200,000 Gold | Amorphous Material Pattern: 005: Albion Resource Defense mission in the Grand Square area of Kingston. Opened at the Grave Walker Void Intercept boss fight. |
Ajax Stabilizer | Hardener x386 Ceramic Composite x408 Compound Carbon Activator x29f Ajax Stabilizer Blueprint x1 200,000 Gold | Amorphous Material Pattern: 049: Vulgus Strategic Outpost mission in the Defense Line area of Fortress. Opened at the Defense Line Void Fusion Reactor. |
Ajax Spiral Catalyst | Compound Coating Material x239 Shape Memory Alloy x462 Positive Ion Particle x38 Ajax Spiral Catalyst Blueprint x1 | Amorphous Material Pattern: 031: Neutralize Void Experiment mission in the Miragestone area of Agna Desert. Opened at the Devourer Void Intercept boss fight. |
Ajax Code | – | Intercept Battle: Common Executioner: Amorphous Material Pattern 019 Intercept Battle: Hard Swamp Walker – Amorphous Material Pattern 096 Location 3: Vespers Hard – Abyssal Void Fusion Reactor – Vespers Moonlight Lake Location 4: White-night Gulch Hard – Abyssal Void Fusion Reactor – White-night Gulch Hatchery |
Along with these materials you will need 400,000 Credits to research Ajax.
Ajax’s skills in The First Descendant

Ajax is one of the tankiest Descendants in the game. he comes with abilities that make use of the Void Energy mechanic and he can erect a shield that can block incoming damage from allies.
Here is a list of all of Ajax’s abilities that you can look forward to in the First Descendant:
Skill Name | Description |
---|---|
Event Horizon (Passive) | Acquires Void Energy after using skills. When the Void Energy reaches its maximum amount, it enhances skills and grants additional effects. |
Orbit Barrier | Creates a shield in front of Ajax. Durability increases proportionally to Ajax’s HP and DEF. ※ If enhanced, reflects damage proportional to DEF to enemies hitting the barrier |
Void Walk | Leaps into the air and lands on the ground to strike nearby enemies, stunning them. ※ If enhanced, Max Shield increases for a certain period of time |
Expulsion | Strikes nearby enemies, knocking them back. ※ If enhanced, knockback range and Max Shield are increased |
Hypercube | Creates a dome-shaped shield. Durability increases proportionally to Ajax’s HP and DEF. ※ If enhanced, reflects damage proportional to DEF to enemies hitting the barrier |
Best Descendant Modules for Ajax
For Ajax’s best Descendant Modules, we will be dividing them into Leveling Modules and Max Level Modules. Max Level mods are for when you reach the endgame loop while Leveling Modules are the mods you pick up in the early-to-late game from the 25 Mastery Level mark.
Leveling Modules:
Module | Quality | Effects |
---|---|---|
Increased DEF | Standard | Increases Ajax’s DEF significantly |
Increased HP | Standard | Considerably increases Ajax’s HP |
Skill Expansion | Standard | Improves Ajax’s Skill Effect Ranges |
Increased Shield | Standard | Boosts Ajax’s Max Shield |
Dual Claw | Standard | Increases Module Capacity Changes your Ajax’s Attack to a dual claw attack |
Tech Specialist | Standard | Boosts the power of Tech Skills |
Max Level Modules:
Module | Quality | Effects |
---|---|---|
Matrix Recomputation | Transcendent | Modifies Expulsion to cast a buff that helps allies to survive |
Increased DEF | Standard | Increases Ajax DEF significantly |
Shield Conversion (MP) | Rare | Increases Ajax Max MP Slightly reduces Ajax’s Max Shield |
Increased HP | Standard | Considerably increases Ajax’s HP |
Skill Expansion | Standard | Improves Ajax’s Skill Effect Ranges |
Increased Shield | Standard | Boosts Ajax’s Max Shield |
Dual Claw | Standard | Increases Module Capacity Changes your Ajax’s Attack to a dual claw attack |
Skill Range Mastery | Rare | Increases Skill Critical Hit Damage Slight increase to Skill Effect Range |
DEF Accelerant | Rare | Improves Skill Duration and DEF |
Tech Specialist | Standard | Boosts the power of Tech Skills |
When slotting in Modules for the best Ajax build make sure to be aware of your current Capacity Limit.
Best Weapons and Weapon Modules for Ajax

Ajax’s kit works incredibly well with three weapons in The First Descendant:
- Python (Submachine Gun)
- Nazeistra’s Devotion (Hand Cannon)
- Albion Cavalry Gun (Machine Gun)
Irrespective of the loadout you are going for, make sure you have the following Modules slotted in:
Mods | Effects |
---|---|
Concentrate Support Ammo | More rounds per Magazine Improved Critical Hit Damage |
Lethal Finish | Once per 15 seconds, an additional round with 30% higher Crit Rate is fired Defeating an enemy with the additional hit reduces the cooldown by 10 seconds |
Action and Reaction | Improves Firearm Attack, slightly increases recoil |
Concentration Priority | Improves Critical Hit Damage and Reload Time |
Rifling Reinforcement | Improves Explosive Attack |
Weak Point Control | Increased Weak Point Damage |
Fire Enhancement | Adds Fire ATK equal to a portion of Firearm ATK |
Weak Point Sight | Improves Weak Point Damage |
Reload Priority | Increased Reload Speed. |
For the Weapon Modules too make sure to keep the Capacity Limit in mind.
How to play Ajax in The First Descendant
To successfully pilot Ajax’s best build in Nexon‘s shooter you will need to master the Void Energy mechanic. He is a lot like Bunny in that regard, and you will need to keep a constant eye on the gauge before using his abilities.
So when you are just picking him up, its best to first familiarize yourself with both the normal as well as the enhanced effects of his abilities. Both will have a different situations of use, and it will take you fair bit of practice while playing him to master this aspect of his kit.
While Ajax is amazing in the support role, he struggles with clearing content. His AoE clear is pretty weak, and he is best played in a party with other Descendants.
Here are some do the Pros and Cons of playing Ajax in The First Descendant:
Pros:
- One of the best front-liners in the game. Can tank through most content.
- Is an excellent support especially when using the Void Energy meter for his skills
- has great AoE CC and can reflect damage back to enemies.
Cons:
- Lacks proper AoE clear and any form of DoT effects
- Can struggle clearing content if not with a good team set-up.