Hollow Knight Silksong Exhaust Organ Guide
The Exhaust Organ is one of the strangest places you’ll encounter in Hollow Knight Silksong. Reaching it requires pushing through the Mist, a maze-like area that deliberately throws you off course. Once inside, you’ll face hazards, a key boss fight, and unlock one of Hornet’s strongest Silk Skills.
How to Reach the Exhaust Organ
To reach the Exhaust Organ, you first need access to the Mist. The Mist connects through Sinner’s Road and can only be explored properly after unlocking the Needolin Ancestral Art. You gain Needolin after defeating Widow in Bellhart, which requires progressing through Shellwood first.
Once you have Needolin, you can play your needle like an instrument near glowing bugs inside the Mist. Watch their flight path and follow the direction they move. This leads you to the correct exits and eventually out of the fog.
After exiting the Mist, continue forward and you’ll enter the Exhaust Organ.
Inside the Exhaust Organ
The Exhaust Organ is a vertical facility filled with blasting steam vents. Climb upward carefully, using wall jumps and timing your glides to avoid the bursts. At the top, you’ll face Phantom, a secret boss that emphasizes speed and counters.
Phantom attacks with fast needle slashes and parries. The safest strategy is to hit once or twice, then retreat. The best heal window is when Phantom throws its needle, as the recovery leaves a gap before the next strike.
Rewards for Beating Phantom, The Secret Boss
Defeating Phantom unlocks the Cross Stitch Silk Skill. This ability lets Hornet parry incoming attacks and counter with a retaliating strike, making it one of the strongest skills in the game for aggressive players.
Past the fight, you’ll activate switches that link the Exhaust Organ to the Grand Bellway. This unlocks fast travel options, though the Citadel route costs more Rosaries than the standard one.
How to Reach the Flea in the Exhaust Organ
There is a hidden Flea inside the Exhaust Organ that some players miss. Near the shortcut switch, look to the top-left corner of the chamber. Strike the hidden wall to reveal a passage leading outside the organ. From there, follow the platforms to the left and you’ll reach the Flea’s cage. Freeing it progresses the Flea questline.
Final Blurb
The Exhaust Organ is a major milestone in Hollow Knight Silksong. It blends puzzle navigation, tricky hazards, and a fast-paced boss fight into one of the most memorable sequences in Pharloom. Clearing it rewards you with Cross Stitch and a path into the Citadel, marking a big step forward in Hornet’s journey.
FAQ
How do you navigate the Mist before the Exhaust Organ?
Use Needolin near glowing bugs. Their flight direction reveals the correct path forward.
What is the reward for defeating Phantom?
You gain the Cross Stitch Silk Skill, which lets Hornet parry and counter enemy attacks.
How do you unlock the Flea inside the Exhaust Organ?
There’s a hidden passage near the top-left shortcut switch. Break through and follow the outside platforms to reach the Flea.
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