Thorny Cyst is an hidden boss in Genshin Impact. Guide includes Thorny Cyst location, map, how to defeat, rewards, hidden achievement, drops, and how to beat the Thorny Cyst!
Table of Contents
Thorny Cyst - How To Defeat
| Area | Mont Esus East |
|---|
How To Defeat The Thorny Cyst
Use Characters With High Health
Since this is underwater, having a character with a high HP would be better since you can't heal underwater. Being near the Thorny Cyst will also drain your health continuously.
Have Healing Food Equipped
You can't use characters to heal underwater and the only option you have is to use healing food. Make sure to have your NRE equipped before going to fight it.
Switch Out Characters Before They All Faint
When you're characters have almost all fainted, make sure to switch out characters to have another full pool of health. Just make sure to do this when there are no enemies around.
Attacks & Tips
Make Use Of The Xenochromatic Jellyfish Bombs
Hold down the ability to be able to throw Jelly bombs you can detonate. This will make it easier to take out the Tendrils and attack the Thorny Cyst.
Destroy The Glowing Tendrils With Jelly Bombs
Only the glowing tendrils can be destroyed so you have to find them first. You can then use the jelly bomb to destroy them.
Attack The Thorny Cist When All Of Its Tendrils Are Destroyed
Once a certain number orall of the Thorny Cyst's tendrils are down, you can then proceed to directly attack its circular body. The Jelly bombs deal a ton of damage and you can easily destroy it so long as you work fast enough.
Thorny Cyst Map & In-Game Location
Map Location
Location Of Thorny Cyst
| Map | In-Game |
|---|---|
 |  |
Thorny Cyst is located in the north area of the Liffey Region. It is found underwater.
Thorny Cyst Rewards, Hidden Achievement & Drops
Unlock A Hidden Achievement
By defeating this boss, you will unlock the "Break The Time Zone" achievement.
Thorny Cyst Drops
Fontaine Related Articles
Map & Puzzle Related
Fontaine Domains
Artifact Domains
| Domain | Key Drops |
|---|---|
 Denouement Of Sin | |
 Faded Theater | |
 Waterfall Wen | |
Talent Book Domains
| Domain | Key Drops |
|---|---|
 Pale Forgotten Glory | |
Weapon Ascension Material Domains
| Domain | Key Drops |
|---|---|
 Echoes of the Deep Tides | |
Weekly Boss Domains
| Domain | Key Drops |
|---|---|
 Shadow of Another World | |
Fontaine Characters
| Fontaine 5 Star Characters | |||
|---|---|---|---|
| Arlecchino | Clorinde | Emilie | Furina |
| Lyney | Navia | Neuvillette | Sigewinne |
| Wriothesley | - | - | - |
| Fontaine 4 Star Characters | |||
| Charlotte | Chevreuse | Freminet | Lynette |
| Other Fontaine Characters | |||
| Egeria | Escoffier | - | - |
