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Hollow Knight: Silksong

Great Conchflies Boss Guide

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☆ Walkthrough in Progress: Bookmark for Updates!
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☆ Full Interactive Map of Pharloom!
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☆ Boss Guides: Moorwing | Savage Beastfly | Widow
★ Tasks & Wishes: Berry Picking | The Lost Fleas

Silksong - Great Conchflies

The Great Conchflies is a boss located in Blasted Steps in Hollow Knight: Silksong. See a loadout you can use to beat Great Conchflies, and its attack patterns in this guide!

List of Contents

Great Conchflies Recommended Loadout

Silk Skill ・Thread Storm
・Cross Stitch
Tools
Hollow Knight: Silksong - Cogfly Cogfly
Hollow Knight: Silksong - Voltvessels Voltvessels
Hollow Knight: Silksong - Fractured Mask Fractured Mask
Hollow Knight: Silksong - Warding Bell Warding Bell
Crests
Hollow Knight: Silksong - Witch Crest Witch Crest
Hollow Knight: Silksong - Reaper Crest Reaper Crest

✎ Press on either Silk Skills, Tools, or Crests to see a full list of each!

The Great Conchflies will frequently burrow and attack in random spots either one by one or simultaneously, and you can only hit them if one or both of them show up. Given this, skills, tools, and attacks that deal area damage or can exploit the boss's attack patterns will be the most effective in defeating the boss.

Thread Storm works great when both Conchflies show up near each other, allowing you to hit both of them for a great deal of damage. On the other hand, you can also easily use Cross Stitch to do a counter attack since their attacks are easy to predict.

For tools, Cogfly allows you to deal passive damage while you're dodging their attacks. Meanwhile, you can use Voltvessels on the spots where they will emerge to deal a ton of damage.

As for defensive tools, Fractured Mask and Warding Bell should be enough to prolong your life throughout the fight.

Since the Great Conchflies is an optional boss fight, you can keep progressing until you get the Witch Crest for this fight. The Witch Crest's Silk Bind gives you another AOE attack perfect for when both Conchflies show up, or even just one.

If you intend to fight them during Act 1, then the Reaper Crest is another very good crest you can use against them. When you hit enemies after healing, this crest will generate Silk Balls that you can collect to quickly refill your threadspool. This will allow you to use your Silk Skills sooner.

Great Conchflies Location

Far West of the Blasted Steps

Great Conchflies Location

The Great Conchfiles are located in the far west of the Blasted Steps, just right before the Pinstress.

Interactive Map

How to Beat Great Conchflies

Great Conchflies Boss Fight Tips
Checkmark Watch Out for the Stream of Dirt
Checkmark Use AOE Attacks

Watch Out for the Stream of Dirt

The Great Conchflies will frequently burrow, then emerge from a random spot in the arena to attack. However, you will see a stream of dirt on the spot they will emerge from just moments before they do. Given this, you just need to watch out for the streams of dirt to dodge or counter their attack.

Use AOE Attacks When Both Conchflies Show Up

The Great Conchflies will show up either one by one or simultaneously. If only one shows up, just hit it with any attack you have available. But if both of them show up, they will be close to each other, so just use AOE attacks like Witch Crest's Silk Bind and/or Thread Storm to hit both of them.

Great Conchflies Attack Patterns

Drill Attack

Visual Cue
Silksong - Great Conchflies Drill Attack Visual Cue
The shell of its head starts spinning.
Counter Get away from its path.

One Great Conchfly will drill on one spot using its head either downward, upward, or sidewards. The only way for you to get hit by this attack is if you're in the path of the Great Conchfly, so simply moving away or jumping is the best way to dodge the attack.

Double Drill Attack

Visual Cue
Silksong - Great Conchflies Double Drill Attack Visual Cue.png
Two streams of dirt will appear on random spots.
Counter Get away from its path.

Both Great Conchflies will drill on random spots from multiple directions simultaneously. Dodging the attack will depend on the directions of both Great Conchflies.

Conch Shell Ricochet Attack

Visual Cue
Silksong - Great Conchflies Projectile Attack Visual Cue.png
Opens its mouth.
Counter Move around.

One Great Conchfly will shoot a conch shell from its mouth, which will ricochet around the arena multiple times before breaking. You just need to move around to dodge the conch shell when it's first launched and as it bounces around.

Hollow Knight: Silksong Related Guides

Hollow Knight Silksong Bosses

List of All Boss Guides

Act 1 Bosses

Main Story Bosses
Moss Mother Moss Mother Bell BeastBell Beast Lace Hollow Knight SilksongLace
Fourth ChorusFourth Chorus Moorwing IconMoorwing Sister Splinter IconSister Splinter
WidowWidow Last Judge IconLast Judge -
Optional Bosses
Savage BeastflySavage Beastfly Skull TyrantSkull Tyrant Silksong - Great ConchfliesGreat Conchflies
Secret Bosses
Phantom Phantom - -

Act 2 Bosses

Main Story Bosses
Cogwork Dancers iconCogwork Dancers Hollow Knight Silksong - Trobbio Boss Icon Trobbio Lace Act 2Lace (Act 2)
Grand Mother SilkGrand Mother Silk - -
Optional Bosses
Forebrothers Signis and GronForebrothers Signis and Gron Raging Conchfly Raging Conchfly Groal the GreatGroal the Great
Disgraced Chef Lugoli Disgraced Chef Lugoli The BroodmotherBroodmother Father of the FlameFather of the Flame
Voltvyrm - Hollow Knight SilksongVoltvyrm - -
Secret Bosses
First Sinner First Sinner UnravelledUnravelled -

Act 3 Bosses

Main Bosses
Silksong - Bell EaterBell Eater Silksong - Skarrsinger KarmelitaSkarrsinger Karmelita Silksong - Nyleth IconNyleth
Silksong - Seth IconSeth - -
Optional Bosses
Watcher at the EdgeWatcher at the Edge Silksong - Gurr the Outcast IconGurr the Outcast Silksong - Second Sentinel IconSecond Sentinel

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