In Hollow Knight, players can collect a total of 9 Vessel Fragments to increase the Knight’s soul capacity by crafting Soul Vessels. Below is a detailed guide on how to find all the Vessel Fragments across various locations.

How to Obtain Vessel Fragments:

1. Purchase from Sly in Dirtmouth:
– First Fragment: After rescuing Sly, you can buy the first Vessel Fragment for 550 Geo.
– Second Fragment: After giving Sly the Shopkeeper’s Key (found in Crystal Peak), you can buy the second fragment for 900 Geo.

2. Forgotten Crossroads:
– After unlocking the elevator by paying a toll, take it up and head left. You’ll find a Vessel Fragment located in this area.

3. City of Tears (King’s Station Area):
– Unlock the right side of the City of Tears. From the top exit of King’s Station, go up to a battle arena. Defeat the enemies here to unlock the door leading to the Vessel Fragment.

4. Deepnest:
– Above the functional Deepnest Tram station, navigate through a challenging spike-filled corridor. Utilize the Mantis Claw, Mothwing Cloak, and Nail Jump techniques to traverse on top of the Garpe-des enemies to reach the fragment.

5. Ancient Basin:
– Deposit 3,000 Geo into the well located at the center of the Ancient Basin to obtain the Vessel Fragment.

6. Howling Cliffs (Stag Nest):
– Make sure you’ve unlocked almost all Stag Stations in Hallownest. Upon opening at least 10 Stag Stations, the final stag will reveal the Stag Nest, housing another Vessel Fragment.

7. Resting Grounds (Seer’s Area):
– Collect 700 Essence and pay it to the Seer, who will grant you a Vessel Fragment in return.

8. Greenpath:
– In Greenpath, go to the left of the Massive Moss Charger. Use a series of nail jumps and wall jumps to reach the top of this area where the fragment is located.

Summary:
By securing all 9 Vessel Fragments, you can combine them in sets of 3 to create Soul Vessels, thus enhancing your soul collection capacity. This upgrade is crucial for combat and exploration throughout Hallownest. Follow this guide to acquire the fragments efficiently and expand your capabilities in the game. Happy exploring!