How to defeat Infernal Walker in The First Descendant

Infernal Walker in The First Descendant is a challenging Void Intercept boss introduced in Season 2. While the boss has quite straightforward mechanics, it can be tricky to bring down due to its high defense and damage. However, once you have an idea of its weaknesses and effective strategies, you can make quick work of it.

In this guide, we shared everything you will need to know about the Infernal Walker in The First Descendant.

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How to access the Infernal Walker in The First Descendant

Hailey is extremely effective in this fight (Image via NEXON)

To access the Infernal Walker encounter, you must meet specific prerequisites. First, you need to achieve Mastery Rank 18. Additionally, you must complete the "the most powerful Colossus" quest at least once. These requirements make sure that only experienced players participate in the fight, and no one has to solo carry the game.

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What are the boss mechanics of Infernal Walker in The First Descendant?

Infernal Walker is weak to Chill damage, making this damage type a primary focus for your build and strategy. The fight centers on targeting and breaking weak points located on the left vent, right vent, nose, and optionally the top of the head, which is hardest to hit. Breaking these weak points staggers the boss, maximizes damage during vulnerable phases, and prevents the boss from entering enrage mode.

If the boss enters Enrage Mode — it regains weak points, becomes more aggressive, and deals significantly more damage. Avoid enrage by consistently breaking weak points and if you are not the DPS of the team, try to focus the damage on you — so the DPS can have an easier time breaking the weak points.

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Recommended Descendants:

Hailey (DPS)

Hailey excels as a primary damage dealer. Use the Piercing Light setup or the Perforator setup for rapid shots. The Boom Cannon is essential for dealing massive damage, often reaching ~19-20 million per shot. Focus on minimizing cooldowns to repeatedly unleash high-damage abilities.

The 7-second ultimate cooldown setup is particularly effective. Hailey’s role is to focus on weak points during stagger phases and maximize overall damage output.

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Enzo (Tank/Support)

Enzo’s shield build is ideal for drawing aggro and protecting DPS players. Use mods such as Annihilation x2, Bravery x2, cooldown reduction on the reactor, and maxed Enduring Legacy. The tank’s primary role is to grapple and expose weak points while maintaining shield uptime and acting as a decoy to keep DPS players safe.

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Strategy for defeating the Infernal Walker in The First Descendant

Use long range high damage weapons against this boss (Image via NEXON)

At the start of the fight, position your team strategically. DPS players should maintain line-of-sight to weak points, while tanks position themselves to absorb aggro. Target the vents and nose using snipers or precision weapons.

To stagger the boss, break weak points to expose it to massive damage. Coordinate with teammates to avoid overlapping efforts on a single weak point. During this phase, Hailey players should use Cannons to deal massive damage while the boss is staggered. Tanks must continue managing aggro and shielding allies.

If the boss begins to enrage, refocus on breaking reformed weak points to regain control. Avoid unnecessary damage that could hasten the enrage progression.

Once the boss’s health drops below 50%, coordinate a team-wide burst to finish it off. Be cautious of enrage mechanics and ensure all weak points are broken during stagger phases.

Rinse and repeat this strategy and eventually, you will take down the Infernal Walker in The First Descendant.