This guide shows you how to beat Berserk Mironette in LET IT DIE: INFERNO. See Berserk Mironette location, strategies in each form, and tips to defeat the Berserk Mironette.
Contents
Berserk Mironette Overview
Located in the River of Souls Great Screaming Plaza

To find and fight Berserk Mironette, head to the Great Screaming Plaza in the River of Souls. You can access this area through the Judgment Gates once you have gathered at least 3,000 SPLithium. Note that you must be at Body Rank 6 to initiate the challenge, and you must defeat the boss in order to survive and escape.
Cannot Re-Challenge Immediately

To exit the River of Souls, you must either defeat Berserk Mironette or perish during the run. Be aware that your Body Rank will drop back to 1 after the exploration, regardless of the outcome, forcing you to grind back up to Body Rank 6 for a rematch.
New Body Colors Will Be Unlocked

Defeating Berserk Mironette unlocks a brand-new color variant for the specific Body you used during the battle. You can equip this new color option the next time you change your Body.
Get Uncle's Sunglasses

As a reward for defeating the boss, you will receive the head equipment Uncle’s Sunglasses. This special item features a Weight of 0 and comes with death protection, so it is never lost. It also sports a unique color variant that sets it apart from the Season 1 and Season 2 versions.
Notes for Defeating Berserk Mironette
Body Rank Returns to 1 After Defeat

Once you defeat Berserk Mironette and return to base, your Body Rank resets to 1. However, unlike a normal death, you won't lose your gear—all items currently in your Backpack are completely safe. Additionally, you can safely bring back any extra loot dropped during the battle, up to your maximum Backpack capacity.
No Escape Pod Drops
Unlike the standard Mironette encounter, Berserk Mironette will not drop an Escape Pod when it shifts forms. Because there are no pod drops to bail you out, failing to defeat the boss means certain death.
Use the Safe Box to Protect Valuable Gear
If you realize you cannot defeat Berserk Mironette during a run, make sure to place your Legendary Rarity Weapons into the Safe Box. This ensures you won't lose your best equipment even if you fail the challenge.
Berserk Mironette Battle Strategy
Features 3 Forms: Shifts at 0 HP
Berserk Mironette changes its form every time its Health drops to 0. The boss has three distinct forms in total; deplete its Health bar a third time to secure your victory.
Invulnerable During Form Changes

Unlike normal Mironettes and Deadnotes—which can still take damage or build up their Rage Gauge during a phase shift—Berserk Mironette is completely invulnerable while transforming. Any attacks landed during this transition deal zero damage and will not increase its Rage Gauge. Use this brief window to focus on healing yourself with skills and items instead.
Target the Glowing Red Weak Point on Its Back

Berserk Mironette's critical weak spot is the glowing red area on its back. To maximize your damage, focus on evading its frontal assaults, quickly maneuver behind it, and unleash your strongest attacks directly on its back.
Avoid the Blue Light Underfoot When Attacking the Back

While you are focusing on Berserk Mironette's weak spot, keep a close eye on the ground. If a blue, lightning-like glow appears at your feet, a powerful Judgment attribute attack is about to strike that exact location. Always prioritize dodging out of the light before continuing your assault.
Shatter the Exoskeleton to Deal Damage

Landing Normal Attacks or Deathblows on Berserk Mironette will deplete its Exoskeleton gauge. While you can reduce this gauge by striking the boss anywhere, targeting the glowing weak point on its back allows you to deal massive health damage while tearing down its defenses simultaneously.
How to Defeat Berserk Mironette
Shares Movesets with Standard Mironette
Many of Berserk Mironette's attack patterns are identical to its standard counterpart. To learn how to dodge and counter its core moves, please consult the basic Mironette strategy guides linked below.
How to Beat MironetteRecommended Loadout & Setup
To maximize your damage, you need to quickly get behind the boss and unleash a devastating Deathblow on its back weak point. Fast weapons with rapid, high-impact Deathblows, such as the Katana, Bat, and Arm, are highly recommended for this strategy. Because your offense relies heavily on these special attacks, ensure your Rage Gauge is charged to around 3 bars before engaging.
| Equipment | Setup |
|---|---|
| Timothy | |
| - Inventory Weight +20 - Rage Gauge +1 - Inventory Weight +30 - Attack +10% - Rage Gauge +1 - Guard Stamina Cost -100% - Guard +30 - Dodge Distance +10% - Dodge Count +1 - Rage Gauge +1 - Rage Gauge Recovery (per Guard Break) +2 | |
| -Legendary Rarity Katana "Rainbow Prison" - Legendary Rarity Bat "Nightmare Mad Bat" |
Equip a Status Effect Resistance Core
Throughout the encounter, Berserk Mironette will periodically deploy dangerous Judgment-attribute attacks. Equipping a "Status Effect Resistance +100%" Core is highly recommended; this completely immunizes you against the Judgment status condition, allowing you to sustain your offensive safely.
Leverage Counterattack Healing
Several of Berserk Mironette's moves can be successfully countered. Equipping the "Health (per Counterattack)" Core allows you to restore HP dynamically throughout the fight, significantly reducing your reliance on limited healing items.