Genshin Impact Operation Downpour Simulation Full Guide (2025)

A deep dive into Genshin Impact’s Version 5.6 tactical simulation event—explore full stage strategies, PvP mechanics, top units, and all reward details.

---

Table of Contents

1. Event Overview & Unlocking

2. Gameplay Mechanics & Strategy Core

3. Preset Stage-by-Stage Breakdown (1–11)

4. Confrontation Scenario – PvP Explained

5. Best Units & Deployment Synergies

6. Full Reward List

7. Final Thoughts & Tips

---

1. Event Overview & Unlocking

Operation Downpour Simulation is a tactical minigame event introduced in Version 5.6 of Genshin Impact. Taking place in Fontaine, it blends tower defense with tabletop-style strategy.

📍 Event Details:

Location: Romaritime Harbor, Fontaine

Duration: May 19 – June 3, 2025

Unlock Requirements: Adventure Rank 20+

Quest Requirement: Archon Quest Prologue – Act III

Speak to Turenna in Romaritime Harbor to begin. Completing Chapter IV Act V unlocks extra dialogue but is not required.

---

2. Gameplay Mechanics & Strategy Core

Players place miniature units such as Hilichurls, Cryo Specters, and Ruin Guards on a battlefield grid. Units act on their own after deployment, and success depends on placement order, terrain, and synergy.

🔑 Core Mechanics:

Unit Types: Ground, flying, ranged, AoE, self-destruct, support

Obstacles & Traps: Wooden barriers, mines, and terrain-blocking units

Elemental Reactions: Freeze (Hydro + Cryo), Burn (Pyro + Wood), etc.

If you're running low on Resin or materials while juggling other events or character builds, many players choose to top up in advance using Genesis Crystals, a convenient option for accelerating progress.

---

3. Preset Stage-by-Stage Breakdown (1–11)

Each stage introduces new mechanics and enemy layouts. Here's a condensed overview:

🔹 Stage 1 – Frontline Formation

Simple intro stage. Use Hilichurl Fighters and Samachurls to defeat Cryo Whopperflowers.

🔹 Stage 2 – Thrust and Volley Combined

Wooden obstacles block access. Use Grenadiers behind Ruin Guards to burn through.

🔹 Stage 3 – Siege Strategies

Introduce Cryo Specters to distract ground enemies while your Electro Samachurl supports the front.

🔹 Stage 4 – Studies in Momentum

Avoid flying near Ousia. Use Electro Cicin early, then bring in Lava Avatar and support units.

🔹 Stage 5 – A Tactician’s Breastplate

Split deployment: Cryo Specters handle Hydro Slimes; Hilichurl Fighters rush Meks at the bottom.

🔹 Stage 6 – To the Trenches

Introduce Hydro Mimic Finch (AoE on death). Use Grenadiers to clear space before placing Mimics.

🔹 Stage 7 – Grand Armies

Barricades block enemies. Deploy Ruin Guards and Electro Samachurls to focus damage on key areas.

🔹 Stage 8 – More Firepower, Fewer Casualties

Use Electro Samachurls to flank Frostarm Lawachurls, and Hilichurl Grenadiers to burn down barriers.

🔹 Stage 9 – Like Mountain Raindrops

Tough stage. Start with Lava Avatar and Hilichurl Fighters on the left. Add Cryo Specters after removing Mek.

🔹 Stage 10 – Like Peeling an Onion

Multi-layer field. Use Hydro Mimic Finch and Electro Cicin to clear flanks. Ruin Guard finishes tanking center.

🔹 Stage 11 – Dispersing the Morning Mist

The hardest stage. Deploy two Lava Avatars, clear barricades with Grenadiers, then sweep with Cryo Specters and Finch.

---

4. Confrontation Scenario – PvP Explained

Unlocked after Stage 11, this mode pits you against another player's defensive build. You’ll alternate offense and defense to claim victory.

🛡 Defense Tips:

Use Hydro Slimes + Cryo Whopperflowers for freezing

Place Suppression Meks to eliminate airborne attackers

Add small structures as bait on the flanks

⚔ Offense Tips:

Prioritize ranged units that can hit over barricades

Use AoE like Lava Avatars and Finch for fast clearing

Timing is critical—deploy just after your frontline draws attention

---

5. Best Units & Deployment Synergies

---

6. Full Reward List

🎁 Preset Scenario Total Rewards:

Primogem ×420

Mora ×220,000

Hero’s Wit ×10

Mystic Enhancement Ore ×20

Sanctifying Unction ×10

Talent Books ×12+ (Guide to Equity / Justice / Order)

🏆 PvP Score Milestones:

If you're juggling multiple events and need to replenish resources quickly, many players turn to itemd2r, a fast and reliable place to recharge and stay ahead during time-limited content.

---

7. Final Thoughts & Tips

🧠 Clear all 11 stages early to unlock PvP and full reward access

🔥 Lava Avatars and Pyro Grenadiers help burn through obstacles quickly

❄️ Utilize elemental combos like Freeze to control enemy waves

⏱️ No time? Focus on clearing Stages 1–6 for the core Primogem rewards

🛒 Top up Genesis Crystals if you want to push through content faster or prep for future banners

 

Plan carefully, deploy wisely—and conquer Fontaine’s strategic battlefield one unit at a time.