Stygian Onslaught Guide - The Best Lineup And Strategies In Genshin Impact Version 5.7.

08/05/2025

The Stygian Onslaught is one of the most difficult permanent endgame combat modes in the game till now. It is an epic battle that demands wit, skills, and character composition of the right choice. The mode grants you with a lot of rewards and you can use them to collect those artifacts and gems. But as rewarding as this event is, the fights are not so easy to win where you only get 120 seconds to defeat those boss-level monsters. So, regardless of skills, this is a battle against time. 

To better enjoy the best gaming experience, we recommand play Genshin Impact on PC and Mac with MuMuPlayer emulator! For more guides about the latest version, please review these articles below: 

  1. Genshin Impact 5.8 Banners Overview
  2. Genshin Impact 5.8: Ineffa's Complete Guide
  3. Genshin Impact Skirk: Best Build & Team Compositions

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What is Co-op?

This is where Co-op comes in. Co-op is a game feature that allows you to group up with your friends or any other player to complete missions together. This will make your fights easier and you can use Co-op to get all the rewards from Difficulty levels 1-4. As for Difficulty 5 and 6, if you are just looking to complete the stage you can do it in Co-op but you must play as a single player to obtain the rewards.

Tip: You can use Random Matchmaking till difficulty 3, but from 4 onwards it is recommended to use Arranged players and all of you should be in the same world.

Stygian Onslaught Guide

Mechanics of the mode

This permanent endgame demands well-honed skills and a good team composition. There are 6 stages based on difficulty that are as follows: 

  • Normal (I), 
  • Advancing(II),  
  • Hard(III),  
  • Menacing(IV),  
  • Fearless(V),
  • and Dire(VI). 

You need to fight against 3 bosses and defeat them on each corresponding difficulty to unlock all the rewards of the event. Additionally, you don't need to fight at every difficulty i.e. if you can defeat the boss on difficulty III, you will obtain all the rewards of that stage plus the rewards of the lower stages.

Strategy Making

For stages 1-4, you are allowed to use the characters repeatedly in the fights. However, for 5 and 6, this is where things get difficult because you have to form 3 lineups each containing 4 characters in order to complete the stage. Additionally, you will also need to know that starting from stage 5, bosses will gain new mechanics that can make them completely overpowered. Try to make use of the advantageous elements for a smooth victory.

Bosses and Lineups to defeat them

Hydro Tulpa

Stygian Onslaught Guide - Hydro Tulpa

This is the first boss you will face in any of the stages. As the name suggests, it is made of hydro therefore the boss is completely immune to hydro damage. The hydro element has a disadvantage against this boss while the Pyro element has the upper hand. It summons little minions that have an HP of about 12% of Hydro Tulpa. Characters of Cryo are effective as freezing the minions instantly deletes them. At stage 5, the boss also gains a shield which can be quite troublesome. 

 

Difficulty

HP

Difficulty 3

4,170,224

Difficulty 4

6,233,933

Difficulty 5

7,658,830

Difficulty 6

17,260,004


The lineup – Pyro Main DPS and one Cryo Main Characters are most suited for this battle such as,

  • Mavuika
  • Xilonen
  • Citlali
  • Bennett 

For Co-op Battle - 2 DPS (preferably Pyro), 1 Cryo, and 1 Shielder will be the most optimal composition.

Lava Dragon

Stygian Onslaught Guide - Lava Dragon

The lava dragon is a tricky boss that has a high resistance against damages in Phase 1 and 2. You will need to fill up a circle with continuous Pyro damage to bring the phase from 1 to 2 then from 2 to 3 again. Pyro has an elemental advantage while taking Cyro and Hydro will lead the Phase to go in a reverse mode. During the initial phases, you should focus on filling up the circle with Pyro DMG so you can quickly reach the 3rd Phase when it is the most vulnerable. 

 

Difficulty

HP

Difficulty 3

3,591,495

Difficulty 4

5,368,810

Difficulty 5

6,595,964

Difficulty 6

11,325,502


The lineup – Dendro and Pyro Mains will be the most effective against Lava Dragon.

  • Kinich
  • Emilie
  • Dehya
  • Bennett

For Co-op Battle - 2 Dendro and 2 Pyro composition is the most optimal composition.

Secret Source Automaton

Stygian Onslaught Guide - Secret Source Automaton

Like the Lava dragon, this boss also has a resistance of 270% in normal phase and cooled has 30% while Racist has 110%. Additionally, during the cooled phase Cyro has -30% resistance.  When the circle depletes, it gives you 36 energy for one time only. This boss has the worst team flexibility difficulty 5+. It is also recommended to bring 2 Cryo mains for an easy ride.

 

Difficulty

HP

Difficulty 3

4,400,305

Difficulty 4

6,577,874

Difficulty 5

8,081,385

Difficulty 6

14,916,723


The lineup - As the boss has less resistance against Cryo Mains, they are highly recommended.

  • Skirk
  • Shenhe
  • Furina
  • Escoffier

For Co-op Battle: 2 Cryo DPS and 2 Any Element will be the most optimal composition.

How to Play Genshin Impact on PC or Mac using MuMuPlayer?

  1. Download MuMuPlayer for PC or Mac and Install it.
  2. Complete Google Sign-in and search Genshin Impact in the APP Center
  3. Click to download Genshin Impact from the search results. [NOTE: If you didn't find this game on the Play Store, you can also download the game's apk file to install locally on MuMuPlayer.]
  4. Click the Genshin Impact icon on the home screen to start playing.

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After you've done these steps which only take a few minutes to complete, you'll be enjoying Genshin Impact on PC, and with the best controls, graphics, performance, and other brilliant functions provided by MuMuPlayer. Now start your play experience in the exciting world of Genshin Impact on PC with MuMuPlayer.

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Conclusion

Even if you are pretty ahead in terms of both level and constellations, you might find yourself falling off in the higher difficulty levels. That is because it's just the way the mode is designed. Pull yourself together, focus on efficient rotations, and use the best character compositions accordingly. 

End of Article

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