Written guideUpdate 1.3.35Public0 commentsMobile FortressWITH ANCESTOR MODULEBOSSINGMOBBINGEND-GAMESOLO

Ajax all-in-one gunner. | Mobbing and Bossing.

Ultimate Ajax - by CHRAMOX - Updated Jul 25, 2026

Catalysts12

Energy ActivatorActive

Capacity81 / 85

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Max HP17,770.21(1,749)

Max Shield830.96(516)

Max MP319.01(187)

DEF351,696.83(7,435)

Shield Recovery Out of Combat4.88

Shield Recovery In Combat4.08

Module Stats11

DEF+537.3%

Skill Critical Hit Rate+253.4%

Non-Attribute Skill Power Boost Ratio-29.4%

Skill Duration UP+76.5%

Skill Power Modifier-56.1%

Skill Effect Range+186.7%

Max Shield-36.5%

Max HP+218.5%

Firearm ATK+15%

Skill Cooldown-36.5%

Max MP-15%

Reactor + Components15

Non-Attribute Skill Power Boost Ratio+20%

Tech Skill Modifier+20%

Skill Cooldown-7.4%

Skill Duration UP+10.6%

DEF+42444

Max HP+150%

Max HP+2044

MP Recovery Out of Combat+2.45

MP Recovery In Combat+0.29

Max MP+159

MP Recovery Modifier+0.16

Shield Recovery Modifier+0.09

Max Shield+283

DEF+25%

Fire Rate+5%

Arche Tuning17

Max General Rounds Modifier+42.5%

Max Special Rounds Modifier+42.5%

Max Impact Rounds Modifier+42.5%

Max High-Power Rounds Modifier+42.5%

Firearm ATK+10.4%

Explosive ATK+10.4%

Melee Weapon ATK+10.4%

Advantage Affinity DMG Modifier+31.2%

Firearm Critical Hit Rate+8.5%

Melee Critical Hit Rate+8.5%

Firearm Critical Hit Damage+12.8%

Melee Critical Hit Damage+12.8%

Additional Weapon ATK (vs. Colossus)+175%

Weak Point Damage+4%

Melee Weapon Piercing Rate Modifier+4

Max MP+7.2%

Skill Critical Hit Damage+32%

Inversion Reinforcement7

Movement Speed+16%

Firearm Critical Hit Damage+29%

DEF+42.8%

Max Shield+40.5%

Skill Power+9%

Enemy Damage Taken+5.2%

Skill Duration UP+10.4%

Supply Fortress

Trigger

Mobile Fortress

Level 11

Guardian's Resolution

Ancestors

Maximize Duration

Cooldown

Level 11

Maximize Range

Range

Level 11

Shield Conversion (DEF)

Defense

Level 11

Increased HP

Level 11

Mid-Air Maneuvering

Level 11

Shot Focus

Level 6

Skill Extension

Level 11

Skill Expansion

Level 11

Increased DEF

Level 11

MP Conversion

Control

Level 11

Weapon builds

Weapon 1

ERASER | Crit

ERASER - ChraMoX

Weapon 2

Thunder Cage - Build classic

Thunder Cage - kaiizer971

Weapon 3

Lumière perçante - Harris Build by Xi_lent_TFD

Piercing Light - kaiizer971

Reactor

External Components

Fellow

Select a Descendant to show its Arche Tuning board.

Ajax all-in-one gunner. | Mobbing and Bossing.

Tips and tricks to build:

Ancestor mod, you need a DEF on it. this build is make 210% DEF and have 324k DEF. so barely capped.

if you dont get 320k DEF, switch Shell Crusher to Annihilator modules. (auxilary and sensor and 2 bottom moving fortress)

Arche Tuning is made to Critical hit guns. slightly differend if using multi hit.

Guns:

Mobbing: Eraser

Wall Crasher: Thunder Cage good to go.

Abyss bosses:

use gun what abyss is weak to. but you ca make piercing light to Toxic. slight tip. so make few of those.

build itself, you can switch HP and Cooldown modules to other like "fire release" check leaderboard what other people doing it.

Skill Rotation (important)

1,2,3,4,1,2,3 in succession then hit a enemy with a skill then shoot it.

time to time (depents skill duration) you need to do 4,1,2,3 and hit enemy with a skill and then shoot it.

by hitting enemy in 1st skill renegates ammo per tick.

by adding "Compulsive impact/high-power rounds" modules to Eraser and piercing light, per tick you get even more ammo.

Ancestor mod:

for a good rolls, you need:

2+1 format. that can give even +200 DEF.

Priority:

DEF

good ot have:

Duration up or Range.

Duration makes skills last longer, and range... you know.

for a good negative:

shield

dimension (boost and modifier)

Ajax all-in-one gunner. | Mobbing and Bossing.

Tips and tricks to build:

Ancestor mod, you need a DEF on it. this build is make 210% DEF and have 324k DEF. so barely capped.

if you dont get 320k DEF, switch Shell Crusher to Annihilator modules. (auxilary and sensor and 2 bottom moving fortress)

Arche Tuning is made to Critical hit guns. slightly differend if using multi hit.

Guns:

Mobbing: Eraser

Wall Crasher: Thunder Cage good to go.

Abyss bosses:

use gun what abyss is weak to. but you ca make piercing light to Toxic. slight tip. so make few of those.

build itself, you can switch HP and Cooldown modules to other like "fire release" check leaderboard what other people doing it.

Skill Rotation (important)

1,2,3,4,1,2,3 in succession then hit a enemy with a skill then shoot it.

time to time (depents skill duration) you need to do 4,1,2,3 and hit enemy with a skill and then shoot it.

by hitting enemy in 1st skill renegates ammo per tick.

by adding "Compulsive impact/high-power rounds" modules to Eraser and piercing light, per tick you get even more ammo.

Ancestor mod:

for a good rolls, you need:

2+1 format. that can give even +200 DEF.

Priority:

DEF

good ot have:

Duration up or Range.

Duration makes skills last longer, and range... you know.

for a good negative:

shield

dimension (boost and modifier)