The First Descendant: Siena Build & Best Loadout

Welcome to The First Descendant Siena Build Guide for Season 3 Episode 3. In this guide, we’ll show you how to unleash the full potential of Siena. Siena is a tactical adjutant of Albion Headquarters. She is in charge of field responses and mission briefings.

The build will include the perfect weapons, stats, and modules, this guide covers everything you need to create a truly devastating build for Siena. Whether you’re looking to dominate enemies in AoE farming, boss fights, or with a budget-friendly setup, we’ve got you covered.

This is a template.

Table of Contents for the Siena Build:

1. How to play Siena: A Deep Dive
2. Siena Builds Overview – Modules
   1. Siena Mobbing Build
   2. Siena Bossing Build
3. Siena Trigger Module
4. Siena Ancestor Modules
5. Arche Tuning for Siena
6. Siena Equipment Overview
   1. Best Weapons for Siena
   2. Best Reactor for Siena
   3. Best External Components for Siena
   4. Inversion Reinforcements
   5. All Siena Transcendent Modules Explained
7. Siena Basics
   1. How to unlock Siena
   2. Skills Explanation – Master Siena’s Abilities
   3. Module Basics Explained!
   4. Best Grapple Hook for Siena
8. Siena’s Story

For builds on other Descendants, visit our The First Descendant Builds Database, or check out the Character Tier List or the Weapon Tier List.

TFD Wiki: We have expanded Alcasthq with tfd.gameslantern.com, a Wiki & Database for anything related to The First Descendant. Use the Character Editor or the Weapon Editor to theorycraft and create builds yourself. Browse Descendants, Weapons, Leaderboard Loadouts or use the Compare Tool. There are plenty of other features you can check out, too!

Here is a quick list of the strengths and weaknesses of the Siena Build for The First Descendant.

How to Play Siena in the First Descendant

In this section, we are going to take a look at how Siena works in The First Descendant. Siena is an X. Learn about her skills in detail in Siena’s Skill Explanation section. Siena’s Transcendent Modules are X!

Siena’s AoE Capabilities: X

Siena’s role is described as an X

XXX

– For more challenging dungeons or content, the Siena Mobbing Build balances AoE damage power with survivability.

Siena’s Single Target Damage: X

While SienaX

XXX

• The Siena Bossing Build offers solid survivability, sustain and great damage with a short cooldown on Siena’s skills.

Siena’s Equipment: Make Or Break It!

To unlock Siena’s full potential, you need the right Weapons, Reactors, and External Components:

• Weapons: Focus on two general damage-dealing weapons and one weapon tailored to whatever you need for utility or special mechanics. See the Best Weapons for Siena section.
• Reactors: Selecting the right reactor can drastically boost your damage. Check out the Best Reactors for Siena section.
• External Components: These are critical for survivability. Properly configured, they double or tripple your HP or DEF. Learn more in the Best External Components for Siena section.

Building a top-tier The First Descendant Siena Build requires not only the right modules but also optimized weapons, reactors, and components.

Best Siena Builds Overview for The First Descendant

In this section, we are going to look at the different best Siena Build Setups for The First Descendant. The optimized setups require a lot of Crystallization Catalysts. We have a full guide on how to farm Crystallization Catalysts in The First Descendant. The Budget setup requires no Crystallization Catalysts.

All Siena build setups require an Energy Activator to increase the Module Capacity. We also have an in-depth guide on how to farm Energy Activators in The First Descendant. Additionally, you will need plenty of Kuiper Shards and Gold to increase Module Levels. Here are the Top 3 Kuiper Shard farm spots!

Equipment: I will cover Weapons, Reactors, and External Components in the Siena Equipment section. To maximize the power of any build, you must get the correct items!

• How to get Modules: Read the Module Farming section.
• 85 Module Capacity How? Read the basics Module section.

Siena Mobbing Build

Siena Bossing Build for The First Descendant

Siena Equipment Overview in The First Descendant

Equipment is the cornerstone of any successful The First Descendant Build. For Siena, having the right setup can mean the difference between dominating a dungeon and falling short. This section breaks down the essential equipment types—Weapons, Reactors, External Components, and Transcendent Modules—and explains how they maximize her power.

Siena Equipment Guide

Equipment Type	Importance	Key Benefits
Weapons	Critical for maximizing damage.	Increases overall DPS. Amplifies the effectiveness of skills. Proper weapon selection can double or triple damage.
Reactors	Essential for boosting skill damage. Incorrect reactors severely reduce effectiveness.	Enhances skill potency. Ensures Siena’s abilities perform at peak levels.
External Components	Arguably the most impactful equipment. Dramatically improves survivability and utility. Set Buffs with 2/4 pieces.	Quadruples stats like HP or DEF. Adds utility like MP recovery. Enables effective performance in high-difficulty content. Core System Enhancements.
Inversion Reinforcements	Adds further buffs to your build.	Perks that can make a difference in build power.
Transcendent Modules	Unlocks advanced playstyles. Essential for specialized builds.	Significantly boosts skill efficiency and power.

Best Weapon for the Siena Build in The First Descendant

Here, you will find the Top 3 Weapons for Siena in The First Descendant that I love to run, among some alternative weapons that you can also test out if you want.

X

Best Reactor for Siena in The First Descendant

Selecting the best reactor for Siena in The First Descendant can significantly enhance her abilities, allowing you to maximize her effectiveness in various scenarios. Not only does the reactor determine your skill damage, but it also gives additional secondary benefits through modifiers. These are often hard to get and take time to grind out!

It is hard to get a Reactor with two best in-slot specs. However, you should be able to get a Reactor with at least one good spec. I will highlight the more important spec in bold in the table below.

How to find the Location of Reactors

Reactor drop locations change every day. Not many players know this. Now there is a reactor search function in-game. Go to the map and press on Difficulty Level Rewards. In here you can see where currently all the reactors drop.

Note: It is possible that no such reactors drop currently. Come back here every day and check if one drops.

If our specified reactor drops in an area, you go there and farm missions and monsters. There will be plenty of reactors dropping from monsters all over the place, any monster works. It will take a while to get a good reactor!

Best External Components for the Siena Build

The best External Components set that works with the Siena Build is called the Slayer Set. It drops only Pyromaniac Colossus on hard difficulty in The First Descendant.

Slayer Set Bonuses:

• 2 Set Bonus:
  • General Rounds Capacity +8%
• 4 Set Bonus:
  • Rounds per Magazine +9%
  • Skill Cost +15%
  • Skill Power 26.1%
  • When defeating enemies inflicted with Towed, recovers MP and Specialized Resource by 12.2% at a 17% chance.

Inversion Reinforcements Setup for Siena

You can find the Inversion Reinforcements in the inventory, located on the bottom left side. This changes with every new season and needs to be leveled up again. You level up Inversion Reinforcements by doing any activity. However, the fastest way to advance it is by completing Disrupt Invasion (max 4 daily) in the dungeon terminal with the red dungeons.

At max level, you have unlocked everything. While the last perk is always active in each row, you can only slot three additional perks at the bottom. Here is what you want to prioritize:

Siena Inversion Reinforcements:

• Hunt: Arche Circulation Tactic.
• Attribute: None.
• Recovery: Selective Neurostimulation.
• Survival: Deploy Hardened Shell.
• Season: None.

All Siena Transcendent Modules Explained

First, let us look at the full list of all Transcendent Modules for Siena in The First Descendant. It is important to note that not all of the modules will be used. Some are more effective than others!

X Transcendent Module

• X
• X is an Siena-exclusive Transcendent Module.

How to get Siena’s X Module:

• Kingston: Slumber Valley (Hard Difficulty)
• Obstructor (Hard Difficulty)
• Module Combine.

X Transcendent Module

X is a Siena-exclusive Transcendent Module.

How to get Siena’s X Module:

• Hagios: The Haven (Hard Difficulty)
• Frost Walker (Hard Difficulty)
• Module Combine.

Siena Basics in The First Descendant

If it is your first time playing Siena in The First Descendant, here are some useful things you should know.

1. How to unlock Siena
2. Siena Skills Explanation – Master Siena’s Abilities
3. Module Basics Explained!
4. Best Grapple Hook for Siena

How to Unlock Siena in The First Descendant

Let’s take a quick look at how to unlock Siena in the First Descendant. To unlock Siena, you have to purchase her from the store, or research her. You need the following items to research Siena:

• 1x Siena Enhanced Cells
  • Location: X
• 1x Siena Stabilizer
  • Location: X
• 1x Siena Spiral Catalyst
  • Location: X
• 1x Siena Code
  • Location: X
• 400k Credits

When you visit Magisters Anais at the Research Institute you can hover over each item. Then click on Acquisition Info and it will tell you where this specific item drops.

The First Descendant Siena Skills Explained

In this section, we will explain the skills available to our Siena Build in the First Descendant, how each skill works, and the best ways for you to use them.

Siena’s skill loadout is themed around electric, applying electric damage to many enemies at once in a big radius.

 

Skill Name	Type	Effect	Best Use Case
X	AoE		AoE Damage
X	AoE		Utility
X	AoE		Utility
X	AoE, Snare		Snare & AoE Damage
X (Passive)	Passive		Is always active

X Skill 1

X

X Skill Description:

• X

X Skill 2

X

X Description:

X

X Skill 3

X

X Description:

• X

X Skill 4

X

X Description:

• X

X (Passive)

X

X Passive Description:

• X

How Modules Work in The First Descendant

Modules are the bread and butter of all The First Descendant Builds. There are a few important things to remember about modules. This is for both Descendant and Weapon Modules.

While most builds require you to increase Module Capacity with an Energy Activator (you get two for free), they won’t require you to reduce the Module cost with Crystallization Catalyst. However, if you want to truly min-max a build, you will need plenty of these Catalysts.

1. How to increase your Module Capacity
2. Module Levels and Cost
   1. Kuiper Shards & best way to farm!
3. Reduce the cost of Modules
4. How to farm Modules

How to Increase Module Capacity

You get a base of 45 Modules for every Descendant character. And you can increase this up to 85 currently. First off, always slot a Sub Attack Module (Slot 7). When you increase this to the max level you will get an additional 10 Module Capacity. if you use a Crystallization Catalyst on the Sub Attack Module, you even get 15 extra slots. You will see this in the setup below.

Additionally, you can use an Energy Activator to increase your Module Capacity by another 20. However, these are fairly hard to farm, only use them on your best Descendants.

Lastly, increasing your Mastery Rank will also increase Module Capacity. Rank 1 gives you 25 Module Capacity, Rank 20 gives you 50 Module Capacity. That is how we reach the 80 Module Capacity that you see on most builds.

1. Slot a Sub Attack Module (and max it out to get +10 capacity, crystallize it for +15)
2. Use an Energy Activator (2o extra capacity)
3. Increase Mastery Rank (25 base capacity, max 50)

Weapons: Basically the same, but because you don’t have Subattack Modules, the Energy Activator gives you 30 instead of just 20 extra capacity.

You can also read my in-depth guide on how to increase Module Capacity in The First Descendant if you need more information. Or my Best Energy Activator Farm Spots and our Best Crystallization Catalyst Farm Spots. I tested all of the grind spots by myself and have already farmed plenty of these items with this method.

Module Levels and Cost

Modules can be enhanced (leveled up) with Kuiper Shards in The First Descendant. Enhancing Modules increases their power. At higher levels, the power will increase way more than at lower levels. Therefore it is always recommended to max out the most important Module first.

Here is an example of a must-have Module called Increased HP for our Descendant. You will notice that we start at 22%, but at the max level, we get a whopping 218.5% increase in health!

Transcendent Modules are the exception; they decrease Capacity Cost with higher levels!

For an in-depth overview, please visit our How to Level Up Modules in The First Descendant guide.

How to Farm Kuiper Shards

Kuiper Shards are used to level up Modules. We have a guide on the Top 3 Kuiper Shard Farming Locations in the First Descendant. We explain how to most efficiently farm Kuiper Shards (300-500k/hour) and show the amount you need to level up mods. As a summary, to max out a Module you need:

• Normal Modules: 103’100 Kuiper Shards
• Rare Modules: 206’200 Kuiper Shards
• Ultimate Modules: 309’300 Kuiper Shards
• Transcendent Modules: 515’500 Kuiper Shards

Always max out the most important Modules first, we will showcase the order below.

How to Reduce the Cost of Modules

To reduce the cost of Modules you need Crystallization Catalysts in The First Descendant. These require a lot of time investment, most builds won’t require you to get many if any at all (Budget Setup). But if you want to completely min-max you need to get plenty of them as technically, every slot can have a specific socket type to half the cost.

Modules have Socket Types. Our Increased HP Module has the Cerulean Socket Type.

• Module: Increased HP
• Socket Type: Cerulean

This is important because if we place our Increased HP Module in the fitting Socket Type, it will half the cost of the Module!

How to farm Modules in The First Descendant

Most The First Descendant Modules can be acquired fairly easily, but the higher-quality ones (Ultimate, Transcendent) are more tedious to obtain. Here is the easiest process to farm Modules quickly.

Open Map > Swap to Access Info > Select Modules

Here, you can find all Modules and their drop locations. If a module drops from several locations, it is recommended to select drop locations with higher drop chances.

There isn’t really much more to this. Simply check the location and go farm. Normal and Rare quality Modules have 30-50% drop chances in most cases. Ultimate ones range around the 5% mark and Transcendent ones can be a tough cookie with around 2% drop chance.

We will list the best farming location of modules in the next step of the guide.

Smooth Grapple Hook for your Siena Build

Using the standard Grapple Hook in The First Descendant can be a pain, and it feels kinda frustrating at times. Don’t worry, there is a way better alternative that will make it a joy to use the grappling hook!

It is called the Mid-Air Maneuvering Sub Module. I use this on all my The First Descendant Builds because it improves grappling by so much.

With this Module, you can attach your Grapple Hook to anything, even air! That means you can simply aim towards the sky and Hook up your grapple hook there for guaranteed fast movement!

Here is a guide on how to get the Mid-Air Maneuvering Sub Module in The First Descendant. It won’t take a lot of effort, but it will improve your build and overall gameplay in The First Descendant.

Siena’s Story in The First Descendant

X

Siena’s Exclusive Equipment –

Related Guides for The First Descendant

You can also check out our Builds Database for The First Descendant or the TFD Tier List to see where characters rank!