Ajax/Ultimate Ajax - Season 2 Shield Tank for Colossus or Void Erosion Purge

Possibly one of the most defensive setup Ajax/Ultimate Ajax can have.

The 6 modules on the left (Increased HP, Increased Shield, Overwhelming Shield, Stim Accelerant, HP Conversion (Shield), Time Distribution) has been discussed among Ajax players that they should be set in stone if you are going for any kind of a Tank build. Currently Shield is King due to Enhanced Void Walk giving this Descendant a 2.5% Shield Regen per second.

Increased DEF, Nimble Fingers, Sensory Dep (HP), Bio Sync Shield are my personal preferences for Void Erosion Purge. You can switch it up for Colossus depending on who you are facing, although any Colossus below Death Stalker should not be an issue for you unless your weapons are not fully upgraded.

Some great modules to mention are:

Amplification Control (Gives you roughly another 5%-6% Shield)

Maximize Conservation (Skill Cost Reduction, can allow you to spam more Enhanced Void Walk)

Shot Focus (More Firearm Damage if you don't need anymore defense)

Sensory Dep (MP) (If you want slightly more shield and that you don't mind losing out on another 20 or so MP)

One of the Elemental Resistances against the Colossus you are facing

One of the Elemental Immunity modules that can prevent Burning, Frostbite, Electrocution, or Poison

For weapons, as of March 1, 2025 I recommend Albion Cavalry Gun or The Last Dagger as these are some of the most powerful ultimate weapons right now. Enduring Legacy which was very popular before unfortunately falls behind due to bad Core Sockets, this may change in the future updates.