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Trotter Effect is Honkai: Star Rail's Tides of War Day 1 challenge. See the best teams and Support Functions, how to beat Day 1, stage details, and all the rewards here!
| Tides of War Event Guides | ||
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| Best Team for Day 1 | |||
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The best team for Day 1 consists of the Trial Characters that are available for the stage. Acheron, Black Swan, and Kafka will be the team's DPS while Gallagher is the healer.
| Support Function | Buff Effect |
|---|---|
Fear Vulnerability |
Grit Phase 2 (Option) When there are no Trotters on the battlefield, turns a non-boss target into a Trotter and inflicts them with Shudder. When the Trotter is defeated, inflicts all enemies with a debuff that increases the DMG they receive. |
Final Blow |
Grit Phase 3 (Option) Increases the damage dealt by allies' Ultimates. |
The support functions chosen focus on buffing the DMG of the three DPS of the team and also their Ultimates. Acheron will greatly benefit from the Final Blow buff since she will be the one who is going to use her Ultimate frequently.

All attacks, including Skills and Ultimates, should mainly be used against the bosses. The normal enemies on the field will naturally die from the AoE DMG and DoTs from your characters' abilities.
But, if a Trotter is about to escape, consider finishing it off to accumulate more Grit Value.

Based on our test runs, you should already be fighting Sam during the 2nd cycle to perfect Day 1. This allows you to have 3 rounds left to defeat Sam. If you fail to beat Sam, just retry again.

Aim to reach Grit Phase 4 immediately since this is where enemies, especially the bosses, receive increased DMG. Also, the energy of all allies will be fully regenerated during this phase.
In Grit Phase 4, spam your characters' Ultimates to defeat the Trotters on the field. This allows you to stack Fatigue, the buff that increases the DMG the enemies will receive.

Use Acheron's Ultimate first so she can start gaining Slashed Dream stacks again from her allies' abilities. This way, you can use her Ultimate several times during Phase 4.
After using Acheron's Ultimate, use the other characters' Ultimates and Skills immediately. Pay attention to Acheron's Slashed Dream stacks and use her Ultimate whenever it is available.

You barely need to heal your characters on Day 1. When you use Gallagher's heals unnecessarily, you are going to consume a Skill Point, which is better used by a DPS from the team. So, only heal someone if they are at the brink of death.
| Trial | Character Build |
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| Day 1 Grit Mechanics |
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◆ Activate Grit Mechanics in battle to accumulate Grit Value and elevate Grit Phase. ◆ Defeat the Trotter to accumulate a large amount of Grit Value. |
| Support Function | Grit Phase & Buff Effect |
|---|---|
Fear Vulnerability |
Grit Phase 2 (Option) When there are no Trotters on the battlefield, turns a non-boss target into a Trotter and inflicts them with Shudder. When the Trotter is defeated, inflicts all enemies with a debuff that increases the DMG they receive. |
Enduring Effect |
Grit Phase 2 (Option) When there are no Trotters on the battlefield, turns a non-boss target into a Trotter and inflicts them with Wind Shear. When the Trotter is defeated, inflicts all enemies with a random DoT effect. |
Final Blow |
Grit Phase 3 (Option) Increases the damage dealt by allies' Ultimates. |
War of Attrition |
Grit Phase 3 (Option) Increases DoT Taken by enemies. |
Insta-Grogginess |
Grit Phase 4 (Fixed) Increases DMG received by all enemies. After entering "Grit Phase 4: Power Awoken", all non-boss enemies are turned into Trotters. Each Trotter defeated increases the DMG received by all enemies. |
Phase 2 and 3 each have two Support Functions you can choose from. You can only pick one for each phase.
| Enemies | Weaknesses |
|---|---|
| Objectives | Rewards |
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| Enter “Grit Phase 4: Power Awoken” 1 time. |
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| Defeat the first wave's boss. |
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| Defeat the second wave's boss. |
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| Defeat the third wave's boss. |
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Trotter Effect is the Day 1 stage of Tides of War where you can defeat Trotters to earn extra Grit Value. In this stage, Nihility characters will be the best ones to use.

| Stage | Trial Characters |
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Day 1 |
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Day 2 |
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Day 3 |
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Day 4 |
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Day 5 |
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Day 6 |
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Failed to finish Sam in so many run using the recommended buff. Then, I try 1 run but this time i change the grit phase 3 buff into ultimate damage, and i can finish it with S
Trotter Effect Day 1 Guide



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I followed the guide and defeated Sam easily