Underworks 100% Checklist & Items in Hollow Knight: Silksong

Q: What items are required for 100% completion in Underworks?

For 100% completion, you need to collect 8 items in Underworks: Spool Fragment 9 (found west from the Cauldron, Cling Grip required), Spool Fragment 10 (found in a pit near lift to Trobbio Arena, 300 Rosaries), Delver's Drill (Tool, found south of the Grand Gate lift), Sawtooth Circlet (Tool, sold by Twelfth Architect for 1 Craftmetal and 230 Rosaries), Cogwork Wheel (Tool, sold by Twelfth Architect for 1 Craftmetal and 360 Rosaries), Scuttlebrace (Tool, sold by Twelfth Architect for 1 Craftmetal and 140 Rosaries), Clawline (Ability, obtained by completing The Cauldron), Crest of Architect (found at Chapel of the Architect near Twelfth Architect, requires 25 Tools and 110 Rosaries), and Crafting Kit 4 (Needle Upgrade, sold by Twelfth Architect for 450 Rosaries). These items are essential for reaching 100% completion in Hollow Knight: Silksong.

💾

Auto-Save Feature: Your progress is automatically saved locally in your browser. No login required! Your checkmarks and notes will be preserved when you return.

0/9

All 100% Items in Underworks

✓	Icon	Item	Description
		Spool Fragment 9Spool Fragment	West from the Cauldron Cling Grip required
		Spool Fragment 10Spool Fragment	In a pit, near lift to Trobbio Arena 300 Rosaries
		Delver's DrillTool	South of the Grand Gate lift
		Sawtooth CircletTool	Sold by Twelfth Architect 1 Craftmetal, 230 Rosaries
		Cogwork WheelTool	Sold by Twelfth Architect 1 Craftmetal, 360 Rosaries
		ScuttlebraceTool	Sold by Twelfth Architect 1 Craftmetal, 140 Rosaries
		ClawlineAbility	Complete The Cauldron
		Crest of ArchitectCrest	Chapel of the Architect near Twelfth Architect 25 Tools, 110 Rosaries required
		Crafting Kit 4Needle Upgrade	Sold by Twelfth Architect 450 Rosaries

0/3

All Benches in Underworks

✓	Icon	Bench	Description
		Underworks Start BenchBench	The first bench in Underworks, after falling down the Elevator from Grand Gate after defeating The Last Judge. 15 Rosaries required for each use.

		The Unravelled BenchBench	The very north of Underworks, also accessible after defeating The Unravelled. 15 Rosaries required for each use.
		Twelfth Architect BenchBench	Located in Underworks, near the Twelfth Architect merchant.

0/1

All Memory Lockets in Underworks

✓	Icon	Memory Locket	Description
		Memory Locket 12Memory Locket	In the passage from The Unravalled

0/1

All Craftmetals in Underworks

✓	Icon	Craftmetal	Description
		Craftmetal 6Craftmetal	Lava tunnel under the Cauldron

0/2

All Collectibles in Underworks

✓	Icon	Collectible	Description
		Psalm Cylinder 1Collectible	Near the passage from The Unravalled
		Bone Scroll 4Collectible	Breakable wall in the first room West side

0/2

All Fleas in Underworks

✓	Icon	Flea	Description
		Flea 17Flea	Next to Cauldron, on the left side
		Flea 18Flea	Path to Underworks from Wisp Thicket

0/1

All Maps in Underworks

✓	Icon	Map	Description
		Blasted StepsMap	Found in the location

0/8

All Hunter's Journal Entries in Underworks

✓	Icon	Entry	Description
		UnderworkerHunter's Journal Entry	Description: "Feeble servant of the Underworks with a long twistpin and hard shell." Hunter's Note: "With all the refuse collapsing throughout their domain, the worker's stiff shell would be essential if they held any hope to survive." Location: Underworks How many needed: 15
		UnderscrubHunter's Journal Entry	Description: "Drained yet dedicated labourer, wielding a coarse steel brush." Hunter's Note: "They they ever hoped to keep their domain clean... What futility." Location: Underworks How many needed: 20
		UndersweepHunter's Journal Entry	Description: "Uses their steel bristled pin to scrub the soot from vents and pipes." Hunter's Note: "Their sharp cleaning implement is as filthy as the rest of the place. They only layer grime on grime." Location: Underworks How many needed: 10
		UnderpokeHunter's Journal Entry	Description: "Drained worker on the verge of collapse. Consumed by the Haunting, they continue to work far beyond their mortal limits." Hunter's Note: "They toiled incessantly for the Citadel, their shells bent and greyed, and now the kingdom's curse means not even death can relieve them." Location: Underworks How many needed: 25
		UnderloftHunter's Journal Entry	Description: "Exhausted bug, grown sickly from the smog of the Underworks. The worker's twistpins, once tools of repair, now serve as spun projectiles." Hunter's Note: "The cost of so much grandeur... Did I peer closely enough into the foundations of my own kingdom?" Location: Underworks How many needed: 25
		UndercrankHunter's Journal Entry	Description: "Heavy, hard-shelled worker, forever repairing the Citadel's crumbling Underworks." Hunter's Note: "There seem no ranks in their domain, yet this one has risen above the rest. A station likely gained through intimidation and thuggery." Location: Underworks How many needed: 4

		Cogwork UnderflyHunter's Journal Entry	Description: "Small automaton built to work, without complaint, in the scorching heat of the Underworks' Cauldron." Hunter's Note: "It is no wonder these constructs were cast. No mortal bug would last long inside that scorching place. Even my shell struggles to withstand its heat." Location: Underworks How many needed: 25
		Cogwork HaulerHunter's Journal Entry	Description: "Small automaton with a shielded shell, intended to carry loads of dangerous flintflame." Hunter's Note: "Born and built only to work until time stiffens its limbs. Perhaps it is mercy this construct knows nothing of the freedom it lacks." Location: Underworks How many needed: 12

Enemies in Underworks

The following enemies can be found in Underworks and are tracked in the Hunter's Journal:

Underworker - "Feeble servant of the Underworks with a long twistpin and hard shell."
Underscrub - "Drained yet dedicated labourer, wielding a coarse steel brush."
Undersweep - "Uses their steel bristled pin to scrub the soot from vents and pipes."
Underpoke - "Drained worker on the verge of collapse. Consumed by the Haunting, they continue to work far beyond their mortal limits."
Underloft - "Exhausted bug, grown sickly from the smog of the Underworks. The worker's twistpins, once tools of repair, now serve as spun projectiles."
Undercrank - "Heavy, hard-shelled worker, forever repairing the Citadel's crumbling Underworks."
Cogwork Underfly - "Small automaton built to work, without complaint, in the scorching heat of the Underworks' Cauldron."
Cogwork Hauler - "Small automaton with a shielded shell, intended to carry loads of dangerous flintflame."

Underworks Frequently Asked Questions

How many items are in Underworks?

Underworks contains 27 total items across all categories, including 9 items required for 100% completion, 3 benches, 1 memory locket, 1 craftmetal, 2 collectibles, 2 fleas, 1 map, and 8 Hunter's Journal entries. This makes Underworks a substantial location with important progression items and tools.

What is the best item in Underworks?

The best items in Underworks include important Tools and an Ability: Delver's Drill (Tool, found south of the Grand Gate lift), Sawtooth Circlet (Tool, sold by Twelfth Architect for 1 Craftmetal and 230 Rosaries), Cogwork Wheel (Tool, sold by Twelfth Architect for 1 Craftmetal and 360 Rosaries), Scuttlebrace (Tool, sold by Twelfth Architect for 1 Craftmetal and 140 Rosaries), and Clawline (Ability, obtained by completing The Cauldron). These items are essential for progression and combat effectiveness.

Where is the map for Underworks?

The Underworks map can be found in the location. This map is essential for navigation through Underworks' industrial and complex structure.

How many Bosses are in Underworks?

Underworks does not contain any bosses. This location focuses on exploration, merchant interactions, and collecting important progression items.

What items are required for 100% completion in Underworks?

For 100% completion, you need to collect 9 items in Underworks: Spool Fragment 9 (found west from the Cauldron, Cling Grip required), Spool Fragment 10 (found in a pit near lift to Trobbio Arena, 300 Rosaries), Delver's Drill (Tool, found south of the Grand Gate lift), Sawtooth Circlet (Tool, sold by Twelfth Architect for 1 Craftmetal and 230 Rosaries), Cogwork Wheel (Tool, sold by Twelfth Architect for 1 Craftmetal and 360 Rosaries), Scuttlebrace (Tool, sold by Twelfth Architect for 1 Craftmetal and 140 Rosaries), Clawline (Ability, obtained by completing The Cauldron), Crest of Architect (found at Chapel of the Architect near Twelfth Architect, requires 25 Tools and 110 Rosaries), and Crafting Kit 4 (Needle Upgrade, sold by Twelfth Architect for 450 Rosaries). These items are essential for reaching 100% completion in Hollow Knight: Silksong.