To beat Molten Fortress in the First Descendant, you must link all the rods surrounding it during its immune phase by shooting the terminals on each rod until they show an arrow pointing to the right. Read on to learn more about how to beat Molten Fortress, its weaknesses, and the rewards for defeating Molten Fortress.

Molten Fortress Overview and Weaknesses

Weakness and Elemental Resistances

Weak Point Type	Crush
Attack Element	Fire Attribute
Elemental Resistance	・Fire: Very Strong ・Electric: Strong ・Ice: Very Weak ・Poison: Normal
Recommended Resistance	Fire Resistance 8,400

Destructible and Removable Parts

How to Beat Molten Fortress

Tips for Defeating Molten Fortress
Connect the Rods During Its Immune Phase Shoot the Fireballs to Prevent the Rods From Resetting Avoid the Rising Flame Pillars Aim for the Core and Head Deal with the Roly-Poly Summons

Hard Mode Guide

Connect the Rods During Its Immunity Phase

As you damage Molten Fortress, it will eventually fill up its Frenzy Meter and position itself in the middle of the arena. It will then enter its immune phase and summon six rods surrounding the area. To remove its immunity, you must successfully connect the rods to each other.

To connect the rods, you must shoot the terminals hanging in the middle of each rod until they all have arrows pointing to the right. You can determine if you successfully connected two rods if you see a line of electricity in between them.

Shoot the Fire Balls to Prevent the Rods From Resetting

As you try to shoot the terminals in the right direction, Molten Fortress will throw fireballs heading toward the rods. These fireballs can overcharge the rods, which is indicated by the set of bars underneath the terminals.

If these rods become overcharged, their terminals will reset, and the arrow will point in its default direction.

Avoid the Rising Flame Pillars

During its immune phase, Molten Fortress will summon multiple flame pillars rising from the ground. These pillars can do significant damage to you but are relatively easy to deal with, as you just need to constantly move to avoid them.

Aim for the Core and Head

The easiest weak spots to target while fighting Molten Fortress are its core and head. Aim your shots in these areas as much as possible to try and bring down the colossus.

Deal with the Roly-Poly Summons

While fighting Molten Fortress, it will summon numerous Roly-Polys, especially during its immune phase. Deal with these enemies first to prevent them from obstructing you from the mechanic and to gain recovery items and bullets as well.

Molten Fortress Rewards

Amorphous Materials Guide

The First Descendant Related Guides

Void Intercept Battle Guide

Void Intercept Guides