Best Excava Build for Season 3 – The First Descendant

by JFFK · September 3, 2025

Welcome to The First Descendant Excava Build (Assault Rifle). This Excava Build is updated for Season 3. The Excava is one of the strongest Assault Rifles, boasting a high fire rate and generally good weapon core augmentation slots.

This Excava Build is optimized against Colossus fights with a focus on Weak Points!

Table of Contents:

You can also view our All Ultimate Weapons in The First Descendant list.

Excava Summary

Excava is a powerful composite rifle that gathers power generated by an electronic firing mechanism to fire voltage-accelerated energy grenades.

Name: Excava
Type: Assault Rifle
Bullets: General Rounds
Tier: Ultimate
Unique Ability: Voltage Accel Energy Grenade Launcher

Unique Ability “Voltage Accel Energy Grenade Launcher”

Hitting an enemy grants the unique effect Voltage Charge. When Voltage Charge reaches max stacks, it changes to the unique effect Energy Grenade. While Energy Grenade is active, fires an Energy Grenade when shooting while aiming, which deals increased damage based on the number of stacks. Hitting an enemy with the Energy Grenade inflicts Voltage Accumulation.

Excava Build for The First Descendant

This is a Single-Target DPS setup that focuses on Weak Point and Multi-Hit damage and is optimized for Colossus fights.

Next, let us take a look at an optimized Excava Build for The First Descendant.

Here is all the info you need to create a powerful Excava Build:

Note: High-Level Weapon Cores boost your weapons’ damage numbers into insanity. Make sure to get weapon cores as soon as possible!

Excava Modules

Modules are an important part of every weapon build in The First Descendant. For the Excava Assault Rifle we want to focus on Weak Point and Multi-Hit damage.

Elemental Damage: Adjust the elemental modules depending on what enemies you fight (Enemy elemental weakness).

Excava Module Configuration Table
Module Slot	Module Name	Socket Type
1	Weak Point Sight	Malachite
2	Fire Rate	Xantic
3	Multi-Piercing Sights	Rutile
4	Multi-Percussion Sight	Rutile
5	Multi-Hit Induction	Rutile
6	Have Aiming	Malachite
7	Expand Weapon Charge	Cerulean
8	Charge Amplification	Malachite
9	Multi-Circulation	Rutile
10	Electric Enhancement	Xantic

Weapon Readjustment

You can use the Weapon Readjustment at the Weapon Workbench in Albion. Here are the best Weapon Readjustments for the Excava weapon:

Multi-Hit Damage
Multi-Hit Chance
Weak Point Damage
Elemental Damage

Try to upgrade the Weapon Readjustments to at least purple quality.

Weapon Cores

Weapon Cores juice up your damage quite tremendously. However, especially the later-level Weapon Cores are difficult to get. So start with whatever weapon cores you have available. Weapon Cores drop in the Void Erosion Purge endgame activity.

Higher level Weapon Cores drop in the higher level Void Erosion Purge levels in The First Descendant. However, you can gradually work towards the highest level. I recommend trying to get to level six as soon as possible, since it won’t require clearing many stages and will already increase the power of your weapon tremendously.

Best Weapon Cores for the Excava weapon:

Electric ATK (Free Augmentation)
Electric ATK (Free Augmentation)
Electric ATK (Attribute Augmentation)
Fire Rate (Tactical Augmentation)
Fire Rate (Tactical Augmentation)

If you play Gley, you can also do 4x Fire Rate or 3x Fire Rate because she has an infinite ammo skill.

Excava Lore

The Excava composite rifle system is an infantry firearm with a unique electronic firing mechanism that uses high-voltage, electric current to fire rounds.

Furthermore, the voltage grenade launcher function, which accumulates power generated during the firing process to form massive energy, thereby accelerating it forward, is exclusive to the Excava system, as well as the its main attraction.

It is considered one of the most powerful personal firearms in Albion; capable of delivering complex attacks, yet is simple to operate.