Genshin Impact

Operation Downpour Simulation Event Guide

Last updated on: June 19, 2025 10:08 PM

◆ New: 5.7 Maintenance, 5.7 Version Codes
◆ Builds: Skirk, Dahlia, Shenhe, Mavuika, Emilie
◆ 5.7: Skirk Materials, Stygian Onslaught
◆ Events: Imagined Arrays, Anecdote Chronicles, Skirk Web Event
◆ Future: Nod-Krai & Nod-Krai Characters

Genshin Impact - Operation Downpour Simulation Event Guide

The Operation Downpour Simulation is a simulated war game event in Genshin Impact 5.6. See all of the event's stage guides, best defensive and offensive lineups, how to play, and all the event rewards here in this guide!

List of Contents

Event Stages
Confrontation Scenario
How to Play
How to Unlock
Event Information
Rewards
Related Guides

Operation Downpour Simulation Schedule

Preset Scenario Stages and Unlock Dates

Phase	Reflective Writing Stage	Unlock Date
I	Frontline Formation	May 19, 2025
	Thrust and Volley Combined
	Siege Strategies
	Studies in Momentum
II	A Tactician's Breastplate	May 21, 2025
	To The Trenches
	Grand Armies
	More Firepower, Fewer Casualties
III	Like Mountain Raindrops	May 23, 2025
	Like Peeling an Onion
	Dispersing the Morning Mist
	Confrontation Scenario Mode Unlocked

Preset Stages are Single-Player, Confrontation is Co-Op

Preset Scenario stages are all played in single-player mode, while the Confrontation Scenario is played against other players in Co-Op!

Genshin Co-Op Boards
Friend Request Board	Co-Op Board	Supporting Cast Board

Frontline Formation Stage 1

Stage Information
Enemies	Cryo Whopperflower x2
Player Lineup	Hilichurl Fighter x2 Electro Samachurl x2
Stage Strategy

Draw Attacks Away

Deploy the Hilichurl Fighters first to draw the attacks of the Cryo Whopperflowers. Send out the Electro Samachurls after the Cryo Whopperflowers start attacking your Hilichurl Fighters.

Thrust and Volley Combined Stage 2

Stage Information
Enemies	Large Hydro Slime x2 Treasure Hoarders - Pyro Potioneer x2
Player Lineup	Ruin Guard x2 Hilichurl Grenadier x2
Stage Strategy

Deploy Two Squads

Deploy Ruin Guard x1 and Hilichurl Grenadiers x1 on both upper left corner and upper right corner of the field. Once the Ruin Guards gain the attention of the Large Hydro Slimes, eliminate them by deploying your remaining Hilichurl Grenadiers in front.

Siege Strategies Stage 3

Stage Information
Enemies	Frostarm Lawachurl x2 Treasure Hoarders - Pyro Potioneer x2
Player Lineup	Ruin Guard x2 Electro Samachurl x1 Cryo Specter x3
Stage Strategy

Let The Ruin Guards Soak Up Damage

Since there are two Lawachurls in the way, you need to send a Ruin Guard along with all your Cryo Specters in order to take out the first Lawachurl.

As the Lawachurl is about to die, send out your Electro Samachurl, then your other Ruin Guard to soak up damage from the Treasure Hoarders and subsequently the Lawachurl.

Studies in Momentum Stage 4

Stage Information
Enemies	Suppression Specialist Mek - Ousia Cryo Whopperflower x3
Player Lineup	Hilichurl Fighter x2 Electro Cicin x1 Eroding Avatar of Lava x3
Stage Strategy

Send Hilichurls After The First Barrier Break

At the start of the fight, spawn both of your Eroding Avatars on opposite ends, then spawn one group of Electro Cicins near the Avatar of Lava that is not being targeted. This should take care of the initial Whopperflower and barriers.

Afterwards, when the Avatars are about to reach the second layer of barriers, spawn all your units as they will charge ahead and break through the barriers, taking out all enemies and buildings inside.

A Tactician's Breastplate Stage 5

Stage Information
Enemies	Suppression Specialist Mek - Ousia x2 Large Hydro Slime x4 Shackling Mine x4
Player Lineup	Hilichurl Fighter x2 Cryo Specter x2
Stage Strategy

Eliminate the Large Hydro Slimes First

To eliminate the Large Hydro Slimes, deploy Cryo Specters at the upper left side of the field to avoid the Shackling Mines. Do not deploy Cryo Specters at the right side of the field because they will be destroyed by the Suppression Specialist Mek - Ousia.

While the Cryo Specters eliminate the Large Hydro Slimes, send out Hilichurl Fighters to defeat the two Suppression Specialist Mek - Ousia units. Deploy the Hilichurl Fighters at the front to ensure that they will target Suppression Specialist Mek - Ousia units and not the obstacles.

To the Trenches Stage 6

Stage Information
Enemies	Treasure Hoarders - Pyro Potioneer x5 Anti-Personnel Mine x7
Player Lineup	Hilichurl Grenadier x3 Hydro Mimic Finch x2
Stage Strategy

Deploy Units in a Timely Manner

Deploy a Hilichurl Grenadier first in order to destroy the obstacles surrounding the Treasure Hoarders - Pyro Potioneer units. After destroying the obstacles, send out a Hydro Mimic Finch to defeat the Treasure Hoarders - Pyro Potioneer units.

If you send out a Hydro Mimic Finch before clearing the obstacles, it will try to avoid the obstacles and get destroyed by the Anti-Personnel Mine.

Do Not Forget the Forward Base at the Corner

Deploy a Hilichurl Grenadier at the left corner of the field to destroy the Forward Base. If you send out the Hilichurl Grenadier after clearing all obstacles, it will help your remaining units destroy the other installations.

Grand Armies Stage 7

Stage Information
Enemies	Large Hydro Slime x3 Treasure Hoarders - Pyro Potioneer x3
Player Lineup	Ruin Guard x2 Hilichurl Fighter x2 Electro Samachurl x2
Stage Strategy

Focus On One Side First

Deploy a Ruin Guard on either the right side or left side of the field. Once the enemies on that side start attacking the Ruin Guard, deploy Hilichurl Fighters and Electro Samachurls.

After defeating the enemies at one side, deploy a Ruin Guard at the other side of the field. When that Ruin Guard also starts absorbing the attacks, deploy Hilichurl Fighters and Electro Samachurls.

More Firepower, Fewer Casualties Stage 8

Stage Information
Enemies	Frostarm Lawachurl x2 Treasure Hoarders - Pyro Potioneer x5
Player Lineup	Ruin Guard x2 Electro Samachurl x2 Hilichurl Grenadier x2
Stage Strategy

Attack From Three Sides

Deploy Electro Samachurls near the Frostarm Lawachurls on each side. Let the Electro Samachurls defeat all the enemies at the back.

At the front, deploy a Ruin Guard to absorb all the attacks from the three Treasure Hoarder - Pyro Potioneers. Also send out the Hilichurl Grenadiers to destroy all obstacles and enemies.

Like Mountain Raindrops Stage 9

Stage Information
Enemies	Frostarm Lawachurl x3 Suppression Specialist Mek - Ousia x1 Cryo Whopperflower - x2
Player Lineup	Hilichurl Fighter x2 Electro Cicin x2 Cryo Specter x3 Eroding Avatar of Lava x1
Stage Strategy

Defeat the Suppression Specialist Mek First

Deploy the Eroding Avatar of Lava and Hilichurl Fighters near the Cryo Whopperflower at the left side of the field. The Eroding Avatar of Lava will destroy the obstacles and pave the way for the Hilichurl Fighters to defeat the Suppression Specialist Mek.

Only the Suppression Specialist Mek can attack flying units. After the Suppression Specialist Mek goes down, send out your Electro Cicins and Cryo Specters to eliminate the rest of the enemies.

Like Peeling an Onion Stage 10

Stage Information
Enemies	Treasure Hoarders - Pyro Potioneer x6 Cryo Whopperflower x2 Shackling Mine x2 Anti-Personnel Mine x1
Player Lineup	Ruin Guard x1 Electro Samachurl x2 Electro Cicin x3 Hydro Mimic Finch x3
Stage Strategy

Deploy Hydro Mimic Finch Units Wisely

At the top part of the field, deploy a Hydro Mimic Finch at both sides to eliminate the Treasure Hoarder - Pyro Potioneer units.

At the bottom part of the field, deploy either Electro Samachurls or Electro Cicins to destroy the Forward Bases at each side. Send out a Ruin Guard to trip the Anti-Personnel Mine before deploying a Hydro Mimic Finch to defeat the remaining enemies.

Dispersing the Morning Mist Stage 11

Stage Information
Enemies	Frostarm Lawachurl x2 Suppression Specialist Mek - Ousia x2 Large Hydro Slime x2 Treasure Hoarders - Pyro Potioneer x2 Anti-Personnel Mine x3
Player Lineup	Hilichurl Grenadier x1 Cryo Specter x3 Eroding Avatar of Lava x2 Hydro Mimic Finch x2
Stage Strategy

Deploy Hilichurl Grenadiers First

Deploy Hilichurl Grenadiers near the Frostarm Lawachurl at the upper part of the field and let them clear the way to the Suppression Specialist Mek at that side. Once the Hilichurl Grenadiers destroyed enough obstacles, send out a Hydro Mimic Finch to defeat the Suppression Specialist Mek and to draw the attacks of the Large Hydro Slime.

After defeating the Suppression Specialist Mek at the left side of the field, send out a Cryo Specter unit to eliminate the Frostarm Lawachurl and the Large Hydro Slime. Deploy the rest of your units as you see fit.

Confrontation Scenario Guide

Best Defensive Lineups

Sample Defense Lineups
Sample Lineup 1
Sample Lineup 2

The main objective of your Defensive Lineup is to be harder to defeat, preferably by having your own resources last longer than your opponent's units.

Long-ranged units such as Suppression Specialist Meks and Hydro Slimes are good choices for defensive units, specially partnered with the Pyro Potioneer and Cryo Whopperflowers that can attack smaller melee units.

Use Smaller Buildings as Bait

A good general defense is to have 2 - 3 buildings somewhere on the sides as bait, and aside from guards for the buildings, round out your units all in the center. This way, your main units are ready to eat up the assault from the enemy.

Use Elemental Reactions to Your Advantage

You can also use elemental reactions to fend off the offensive lineup of your opponents. Placing a Large Hydro Slime next to Frostarm Lawachurls or Cryo Whopperflowers can let you Freeze attacking units, which will make them more vulnerable to attacks.

Best Offensive Lineups

Sample Lineup 1
Hilichurl Grenadier x2 Cryo Specter x2 Eroding Avatar of Lava x2 Hydro Mimic Finch x2
Sample Lineup 2
Hilichurl Grenadier x2 Electro Cicin x2 Ruin Guard x2 Electro Samachurl x2

The best Offensive Lineups are those that contain both Flying and Ranged units. The Hilichurl Grenadier, in particular, is great at attacking from an undetected distance and destroying obstacles.

Offensive Lineup Rating

Best Units to Use	Rating
Hilichurl Grenadier	★★★
Cryo Specter	★★★
Eroding Avatar of Lava	★★★
Hydro Mimic Finch	★★☆
Electro Samachurl	★★☆
Ruin Guard	★★☆
Hilichurl Fighter	★☆☆
Electro Cicin	★☆☆

How to Play Operation Downpour Simulation

Defeat the Opponent in Preset Scenarios

Genshin Impact - Operation Downpour Simulation - Gameplay 1
Operation Downpour Simulation has 11 Preset Scenario stages, where players must defeat all the enemies and destroy the buildings using a set amount of units.

You must place the units provided strategically on the sides of the stage area to break through the enemy's defenses!

Select Your Defensive and Offensive Lineups in Confrontation Scenarios

Genshin Impact - Operation Downpour Simulation - Gameplay 2

Select your game pieces for each challenge and strategically place them around the deployment areas. The deployment of each game piece will also be different, other come in groups while others come as a single unit.

Defeat Other Players in Co-Op to Earn Points

Victory can be achieved against other players when either the defending formation have been defeated, or you have greater progress against the opposing side!

Utilize the Traits of Each Game Piece

Genshin Impact - Operation Downpour Simulation - Gameplay 3
Each game piece will lock on to targets based on their own traits. For example, melee pieces will try to go around obstacles to defeat targets, while ranged pieces will fire over obstacles, given enough range.

How to Unlock Operation Downpour

Speak to Turenna at Romaritime Harbor in Fontaine

Genshin - Talk to Turenna

Unlocking the event requires you to head to Romaritime Harbor at the start of Fontaine and speak to Turenna, who will ask the Traveler to participate in a new and improved war game that she and Enghiene have been working on.

Fontaine Interactive Map and Location

Operation Downpour Simulation Information

Operation Downpour Simulation Event Details

Genshin Impact - Operation Downpour Simulation Event

Event Start	May 19, 2025
Event End	June 03, 2025
How to Unlock	Adventure Rank 20+ Complete Archon Quest Prologue - Act 3
Optional Quest	Archon Quest Chapter 4 Act 5 - Masquerade of the Guilty
Rewards	+ Talent Ascension Materials

What is the Operation Downpour Simulation?

The Operation Downpour Simulation is a war game event where you strategize and deploy monsters to seige the enemy base, or defend your own!

Other Current & Upcoming Events

Operation Downpour Simulation Release Date

Genshin Impact Version 5.6

Release Date	May 7, 2025

The Operation Downpour Simulation event was released as part of the Version 5.6 update and went live on May 19, 2025.

Version 5.6 Release Date and Characters

Operation Downpour Simulation Event Rewards

Total Operation Downpour Simulation Event Rewards

All Operation Downpour Simulation Event Rewards
Primogem x420	Mora x220,000	Hero's Wit x10
Mystic Enhancement Ore x20	Sanctifying Unction x10	Guide to Equity x4
Guide to Justice x4	Guide to Order x4

Preset Scenario Stage Rewards

Stage	Rewards
Stage 1	Primogem x20 Mora x20,000 Guide to Equity x2
Stage 2	Primogem x20 Mora x20,000 Guide to Justice x2
Stage 3	Primogem x20 Mora x20,000 Guide to Order x2
Stage 4	Primogem x20 Mora x20,000 Guide to Equity x2
Stage 5	Primogem x20 Mora x20,000 Guide to Justice x2
Stage 6	Primogem x20 Mora x20,000 Guide to Order x2
Stage 7	Primogem x40 Hero's Wit x2 Mystic Enhancement Ore x4
Stage 8	Primogem x40 Hero's Wit x2 Mystic Enhancement Ore x4
Stage 9	Primogem x40 Hero's Wit x2 Mystic Enhancement Ore x4
Stage 10	Primogem x40 Hero's Wit x2 Mystic Enhancement Ore x4
Stage 11	Primogem x40 Hero's Wit x2 Mystic Enhancement Ore x4

Confrontation Scenario Rewards

Score Obtained	Rewards
1000	Primogem x20 Mora x20,000 Sanctifying Unction x2
2000	Primogem x20 Mora x20,000 Sanctifying Unction x2
3000	Primogem x20 Mora x20,000 Sanctifying Unction x2
4000	Primogem x20 Mora x20,000 Sanctifying Unction x2
5000	Primogem x20 Mora x20,000 Sanctifying Unction x2

Genshin Impact Related Guides

Genshin Impact - List of Events

List of Events

Current Events

Event Guide	Date and Rewards
Battle of Imagined Arrays	06/20/2025 - 07/07/2025 + Free Copy of 4-star Sethos
Travelers' Tales: Gilded Chapter	06/18/2025 - 07/29/2025
Through Yesterdays, To Today	06/18/2025 - 07/02/2025

Upcoming Events

Event Guide	Date and Rewards
Stygian Onslaught	06/25/2025 - 06/29/2025 + Dust of Enlightenment
Overflowing Abundance 5.7 Rerun	07/07/2025 - 07/14/2025 Weapon and Talent Up Materials
Reminiscent Regimen: Frenzy	07/14/2025 - 07/24/2025 + Weapon and Talent Up Materials + Free 4-Star Bow
Fearsome Ferocious Firepower	07/21/2025 - 07/29/2025

Permanent/Recurring Events

Event Guide	Date and Rewards
Stellar Reunion Returnee Event	Permanently Available + Prototype Rancour
Daily Check-In	2021/03/01 - Permanently Available
Baptism of Song	Permanently Available + Free Barbara
Hangout Events	Permanently Available after Version 1.4 + Talent Materials + Specialty Dish
Test Run	Permanently Available + Ascension Materials
Repertoire of Myriad Melodies	Permanently Available

Past Events

List of Past Events

Comment

9 Anonymous20 days

dumbest fcking event... the ai is terrible

8 Anonymous20 days

I don't like the co-op, stop adding it.. Also stage 7 or whatever the trench stage is horrible, the rest were easy.

See more comments (9 Comments)

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