Videogames.
Gym.
Sneakers.
Manga.
My dog.
In that order.
This comprehensive walkthrough covers Cogwork Core, Whispering Vaults, and Choral Chambers in Hollow Knight: Silksong, including the Cogwork Core map location, memory puzzle solution with all bell sequences, and strategies to defeat Trobbio. Follow this step-by-step guide to collect all items including the Mask Shard, Psalm Cylinder, and Cogheart Piece while navigating the challenging gauntlets and platforming sections.
KEY TAKEAWAYS:
- Estimated Time: 60-90 minutes
- Difficulty: Moderate to Hard (gauntlets, puzzles, boss fight)
- Required Abilities: None initially, Needolin for later areas
- Major Rewards: Cogwork Core Map, Mask Shard, Psalm Cylinder, Cogheart Piece, Claw Mirror
- Boss Fights: Trobbio (moderate difficulty)
- Puzzle: Memory puzzle with bell sequences in Whispering Vaults
Table of contents
After defeating the Cogwork Dancers, drop down the trapdoors that opened up.
Entering Cogwork Core
Bench and Map
Enter the bench room on the left and hit the gear on top multiple times to form the bench. Go up the shaft on the left. Press down on the switch to pick up the Cogwork Core Map.
Trapdoors and Exploration
Go back out and drop down. Take the path on the left.
Cogwork Core Gauntlet
Gauntlet Fight and Switch
Inside you will face a gauntlet.
Once done, hit the switch on the left and go through.
Finding the Mask Shard
Go up the shaft here and to the left. You can find a Mask Shard there, on the table and also connect back to Choral Chambers. Go back out to the central area now and drop down.
Top Right Path
Platforming and Enemy Room
We are heading towards the area in top right. Go down and around then start to pogo upwards.
Go to the end of the room. Take out all the enemies in the room, or avoid them.
Opening the Door
Hit the switch a couple of times and the door will open. Go through.
This new area will link back to the Choral Chambers, hit the switch here a couple of times to open up a path.
Return to Choral Chambers
Upper Path and Shortcuts
Keep moving to the right. At the end climb up to the top and turn left. Hit the block to open up the path and then wall cling up to the top. Go to the right and you will be in another gauntlet.
Second Gauntlet & Whispering Vaults
Choral Chambers Battle
Survive the gauntlet and go to the right. Drop down and head to the right – you might wanna smack the block here on the left to create a shortcut connecting back to the area that you just came from.
Entering Whispering Vaults
Once you head right you will be in the Whispering Vaults.
In this area, drop down the shaft you see immediately after entering. Go to the right, down and then enter the room on the right.
Whispering Vaults Exploration
Descent and Speaker Room
There is a speaker here to the left and not much else.
Finding the Psalm Cylinder
Go up at the end of the room past the path leading up to the bench and on the right you can find the Psalm Cylinder.
Vaultkeeper Cardinius
Meeting and Trading
If you come back to this room later, you will find Vaultkeeper Cardinius. If you give him the Psalm Cylinder, you can play the Voices of the Choir.
Block Puzzle
Moving Blocks and Hidden Rosaries
For now, Head back out and drop down on the left.
Go to the right then up and then continue moving down. On the right you will find an exit.
Go through the next two room and then drop down the open space with rails.
Keep to the left till you can find a moveable block and hit it from the left.
Now drop down and hit the block there to the right.
Now climb up the second block and hit the box above.
Now hit this box back to its original position and climb back up. If you go up on the block on the left you can get some Rosaries.
Go back down to the bottom and take the exit on the left.
Keep going to the left till you reach this room with a memory puzzle.
Memory Bell Puzzle
Solving Patterns
You have to step on the switch then memorize the pattern in which the bells ring. Then hit the correct sequence to get the clockwork to move. You have to do it 3 times.
For the first movement, the sequence is –
For the second movement, the sequence is –
For the third movement, the sequence is –
Cogheart Piece Reward
Once you get all sequences done you will receive the Cogheart Piece.
The Stage & Trobbio Prelude
Entering the Stage
Exit this area and climb up in the earlier room to enter the room marked with three heads or The Stage.
Read about Trobbio and keep moving to the left.
Boss Preparation
Unlocking the Gate
Keep going and you will be back at the room near the second main area of the Choral Chambers . Hit the switch to unlock the gate.
Go to the right and prepare for a boss fight.
Boss Fight – Trobbio
Main Attack Patterns
Let’s break it down.
Strategy and Rewards
Trobbio flies around and creates glittering areas that explode after a while. Meanwhile he also drops these red balls.
The balls bounce around the room and stop in random places and creates four jets of fire.
These balls of death are also randomly spawned from the trapdoor below the Stage.
Trobbio pops up and spins around, causing massive damage.
This tornado then leaves him in two directions and goes off, still doing damage. One goes in front of him and the other behind him. You should jump over this attack and he gives you an opening when the tornadoes leave him.
When he pops down below the Stage, watch the spotlights on top move. This is the tell of where he is going to pop back out from or chuck the red balls from.
In the second phase, he summons multiple trapdoors – the one that’s exploding with red light is the one he is going to pop out from.
Watch for the openings – there is one right after the tornadoes leave his body. There is one when he lands after creating the glittery explosions or right after popping up from underneath the Stage.
He gets low right before chucking the balls up the in the air. You can get hits in then as well.
Be patient and watch his moves and it should be easy enough to recognize his tells.
The reward for beating him is the Claw Mirror.
Cogwork Core Puzzle Solution (Upper Section)
How to Get to the Cogwork Core Puzzle
The musical puzzle is located at the very top of Cogwork Core. You’ll need the Clawline ability to navigate the intense platforming section leading to the top.
Platform your way up the right side of the area, using Clawline to grapple between points while avoiding sawblades and enemies.
Solving the Music Pillar Puzzle
At the top, you’ll find four musical pillars with rotating segments. Your goal is to align the musical notes so the connecting lines form a continuous pattern.
Solution Steps:
- Start with the top row of each pillar
- Rotate each segment to connect the note lines
- Work your way down each pillar systematically
- Each pillar sinks when correctly aligned
Completing this puzzle rewards you with the Architect’s Melody, one of three melodies needed for the Threefold Melody quest.
Frequently Asked Questions
How do I get to Cogwork Core?
After defeating the Cogwork Dancers in Choral Chambers, drop down through the trapdoors that open in the arena floor. Head left to find the bench room entrance to Cogwork Core.
Where is the Cogwork Core map located?
The Cogwork Core map is found by entering the bench room on the left, activating the contraption to form the bench, then climbing up the shaft on the left side and pressing the switch.
How do I solve the Cogwork Core puzzle?
The main puzzle is the memory puzzle in Whispering Vaults. Step on the switch to hear the bell sequence, then replicate it by hitting the correct bells in order. There are three sequences to complete to earn the Cogheart Piece.
What are the bell sequences for the memory puzzle?
The puzzle requires three separate sequences shown visually in the walkthrough images above. Memorize each pattern after stepping on the switch, then replicate by hitting the bells in the correct order.
How do I defeat Trobbio?
Watch for Trobbio’s movement patterns – jump over glittering explosion areas, avoid the bouncing red fire balls, and attack during openings after his tornado spin attack leaves his body or right after he surfaces from below the Stage.
Where is the Psalm Cylinder in Whispering Vaults?
Drop down the shaft after entering Whispering Vaults, go right then down, enter the room on the right with the speaker, then go up past the bench path and find the Psalm Cylinder on the right side.
How to get the Mask Shard in Cogwork Core?
Complete the western gauntlet section, defeat all Cogwork enemies, hit the switch to open the door, climb up the narrow corridor to the top area where the Mask Shard sits on a table.
This concludes the Cogwork Core walkthrough. Continue your journey to Whispering Vaults and High Halls.
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Videogames.
Gym.
Sneakers.
Manga.
My dog.
In that order.
