Genshin Impact | Chassanion Location Guide & How To Beat

Anemo
Anemo Traveler	Chasca
Jean	Kaedehara Kazuha
Mizuki	Varka
Venti	Wanderer
Xianyun	Xiao
Hydro
Childe	Columbina
Furina	Hydro Traveler
Ayato	Mona
Mualani	Neuvillette
Nilou	Kokomi
Sigewinne	Yelan
Geo
Albedo	Arataki Itto
Chiori	Geo Traveler
Linnea	Navia
Xilonen	Zhongli
Zibai
Electro
Clorinde	Cyno
Electro Traveler	Flins
Ineffa	Keqing
Raiden Shogun	Varesa
Yae Miko
Dendro
Alhaitham	Baizhu
Dendro Traveler	Emilie
Kinich	Lauma
Nahida	Nefer
Tighnari
Pyro
Arlecchino	Dehya
Diluc	Durin
Hu Tao	Klee
Lyney	Mavuika
Nicole	Pyro Traveler
Yoimiya
Cryo
Aloy	Citlali
Escoffier	Eula
Ganyu	Kamisato Ayaka
Lohen	Qiqi
Sandrone	Shenhe
Skirk	Wriothesley

Anemo
Ifa	Jahoda
Lan Yan	Lynette
Prune	Sayu
Shikanoin Heizou	Sucrose
Hydro
Aino	Barbara
Candace	Dahlia
Xingqiu
Geo
Gorou	Illuga
Kachina	Ningguang
Noelle	Yun Jin
Electro
Beidou	Dori
Fischl	Iansan
Kujou Sara	Kuki Shinobu
Lisa	Ororon
Razor	Sethos
Dendro
Collei	Kaveh
Kirara	Yaoyao
Pyro
Amber	Bennett
Chevreuse	Gaming
Thoma	Xiangling
Xinyan	Yanfei
Cryo
Charlotte	Chongyun
Diona	Freminet
Kaeya	Layla
Mika	Rosaria

Last Updated: August 12, 2026 9:36 PM

Chassanion is a hidden boss / local legend in Genshin Impact. Guide includes Chassanion location, map, how to defeat, rewards, hidden achievement, drops and how to beat!

Table of Contents

Chassanion Map Location
How To Beat Chassanion
Rewards & Achievement

Fontaine Local Legends Guide

Chassanion Map & In-Game Location

Map Location

Location Of Chassanion

Map	In-Game

Chassanion is located inside the Tower of Ipsissimus. You can access it's location by going through the underwater passage.

How To Get To Chassanion

	Steps
1	Enter the tower through the lower entrance
2	Head down the stairs
3	You will arrive in Chassanion's room

Chassanion - How To Defeat

Area	Tower of Ipsissimus (Underwater)

How To Defeat The Chassanion

Make Use Of The Octopus Ability

To beat this boss, you will have to make use of the Octopus ability. Make sure to grab this ability as soon as you enter the boss' arena.

Attacks & Tips

Use Octopus Ability To Push Bubbles Back To Chassanion

Use the Octopus ability to push back the explosive bubbles that Chassanion will throw at you. It's recommended to just stand still and hold the ability to push the bubbles back.

Chassanion Rewards, Hidden Achievement & Drops

Unlock A Hidden Achievement

By defeating this boss, you will unlock the "Chassanion" achievement.

All Achievements List

Chassanion Drops

Mysterious Xenochromatic Crystal

Fontaine Related Articles

Map & Puzzle Related

Map & Collectibles
Hydroculus		Shrine of Depths
Local Specialties & Materials
Marcotte	Lumidouce Bell		Rainbow Rose
Tidalga	Beryl Conch		Romaritime Flower
Lumitoile	Subdetection Unit		-

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
Clorinde	Emilie	Escoffier	Furina
Lyney	Navia	Neuvillette	Sigewinne
Wriothesley	-	-	-
Fontaine 4 Star Characters
Charlotte	Chevreuse	Freminet	Lynette

Other Fontaine Guides

Other Fontaine Guides
Fontaine Forgeable Weapon	Fontaine Fishing Spot
Fontaine Aircrafts	Fontaine Luxurious Chests
Mysterious Ore	Thorny Cyst
Pufferfruit Challenge	Potential Energy Orb
Anecdota Septentrionalis Book	-

DPS				Support				Sustain
On-Field						Off-Field

Mondstadt	Liyue
Inazuma	Sumeru
Fontaine	Natlan
Nod-Krai	Snezhnaya

Alyosha	Danica
Mitya	Noy
Odette	Tsaritsa
Valeriy	Vesna
Vodyanitsa

Anemoculus			Shrine of Depths
Calla Lily			Cecilia
Dandelion Seed			Philanemo Mushroom
Small Lamp Grass			Valberry
Windwheel Aster			Wolfhook

Geoculus			Shrine of Depths
Cor Lapis			Glaze Lily
Jueyun Chili			Noctilucous Jade
Qingxin			Silk Flower
Starconch			Violetgrass