The 4.1 version update of Genshin Impact brings various additions to the game, including new areas to explore, numerous quests, exciting new characters, and more. Additionally, two new world bosses have been introduced along with new Local Legends. Furthermore, the developers have hidden another boss, Thorny Cyst, which features a unique combat mechanic that requires players to focus on specific aspects during battle.

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Genshin Impact: Millennial Pearl Seahorse Boss Guide

Millennial Pearl Seahorse is a Genshin Impact boss who resides in the Liffey Region of Fontaine.

Defeating this enemy yields valuable rewards, such as a Luxurious Chest and an achievement. To ensure a quick and efficient battle, players should pay attention to the following steps on how to find and defeat Thorny Cyst in Genshin Impact.

Thorny Cyst Location

Genshin Impact - Thorny Cyst Location

To locate Thorny Cyst, players are initially advised to head to Mont Esus East. They can do this by diving beneath the waterfall in the area. Alternatively, players can use an underwater teleport point to directly reach the vicinity and then proceed southwest toward the waterfall area. As they approach, they will notice a sizable tunnel entrance. Following this tunnel will eventually lead them to a blocked passage, guarded by a new type of enemies that attack when nearby known as mini meanies. Before reaching this point, players can also collect a Hydroculus and an Exquisite Chest within the tunnel.

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Upon arriving at the blocked path, players should acquire the nearby Xenochromatic Jellyfish's abilities. Utilizing these abilities will allow them to simultaneously eliminate both mini meanies on the wall, thereby unlocking access to the Thorny Cyst boss area.

How to Defeat Thorny Cyst

Genshin Impact - Thorny Cyst Battle

Upon arrival in the area, players will immediately spot a massive cyst-like structure with sprawling branches. Notably, within this area, players' health will gradually diminish over time, necessitating their careful attention to it. Hence, expediting the battle becomes crucial for enhancing survivability. Luckily, defeating Thorny Cyst follows a relatively straightforward process, as players will predominantly rely on the Xenochromatic Jellyfish's ability to inflict damage. However, it's worth noting that players cannot directly harm Thorny Cyst until they have eliminated a specific quantity of its restraining roots.

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Thorny Cyst's HP bar remains slightly grayed out until it becomes vulnerable to damage. Players simply need to locate the glowing roots and target them with the Xenochromatic Jellyfish's abilities. During the initial phase, these roots remain stationary. However, in the later phase of the battle, they begin to move, requiring players to act swiftly to eliminate them as quickly as possible before they swap positions. Furthermore, through these phases, Thorny Cyst will also summon Fontemer Aberrants. It is advisable for players to prioritize Thorny Cyst, instead of defeating these summoned enemies especially if the Aberrants are not close enough to Cyst or the glowing roots, as this will slow down the killing time for Thorny Cyst itself. Players can see the full combat video to understand the mechanics better below:

Here are some additional tips to make the process even easier:

  • While the characters used doesn't matter for Thorny Cyst since it is an underwater fight, utilizing characters like Lynette and Neuvillette can prove to be advantageous due to their passive abilities. Lynette's passive talent is particularly helpful as it enables players to easily spot fish clusters that can restore HP to the entire party when nearby, simplifying the process of locating them. Meanwhile, Neuvillette's passive skill allows for faster swimming, facilitating quicker navigation to reach the moving glowing roots.
  • For efficient HP management during the battle, players may also consider relying on the NRE gadget. If equipped, it will allow players to heal characters easier without going through the menu or revive the fallen characters.
  • It's advisable to swap characters strategically, ensuring that they are roughly depleted by a similar percentage when collecting fish clusters. These clusters provide healing to the entire party, not just the active character, thereby players get to heal more while conserving fish clusters, especially if they are taking a long time to defeat the Thorny Cyst.
  • In instances where players find it challenging to accurately aim the Jellyfish bomb or if it's taking too long to reach the desired location, they have the option to detonate it mid-launch instead.

Rewards For Defeating Thorny Cyst

Genshin Impact - Thorny Cyst Reward

After successfully defeating Thorny Cyst, players will be rewarded with three main prizes. The primary reward is a Luxurious Chest, which holds valuable items and resources. Additionally, players will earn the "Break The Time Zone" achievement in the Wonders of the World category, which grants an extra 5 Primogems.

Moreover, players will also receive a Mysterious Ore as part of their rewards. This resource is essential for accessing specific hidden exploration areas within the game, and players will need to collect a total of 7 of these items to progress further in these areas.

More: Genshin Impact: How To Get The Hidden Fontaine Boss And Mob Achievements

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Top Critic Avg: 81 /100 Critics Rec: 87%
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Released
September 28, 2020
ESRB
Teen / Alcohol Reference, Fantasy Violence, In-Game Purchases (Includes Random Items), Users Interact
Engine
Unity
Multiplayer
Online Co-Op
Cross-Platform Play
All platforms
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