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The Impregnable Fortress (Silver Snow: Chapter 17)
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The Impregnable Fortress (Silver Snow: Chapter 17)

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Read this Fire Emblem: Three Houses story walkthrough guide of Silver Snow Chapter 17 - The Impregnable Fortress (Church of Seiros). Including dialogue choices, battle tips, quests, and more!

Table of Contents

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Silver Snow Chapter 17 - Part 1 Guide

Heading To the Fort Walkthrough Chart

No.Procedure
1The month begins in conversation with Seteth and Flayn
2[Seteth: Conversation Options]
・Edelgard is injured...
→ Neutral reply
・Dimitri is dead...
→ Neutral reply
・Claude is missing...
→ Neutral reply
3[Seteth: Conversation Options]
・In time...
→ Flayn relationship goes up
・I can't decide that just yet.
→ To be confirmed
4[Seteth: Conversation Options]
・We should set out
→ To be confirmed
・Let's decide where to invade first.
→ Seteth relationship goes up
5 Harpstring Moon 5/3 - Free Time
- Golden Fish
- Choir Festival
- Anna's Shop Open
- Dark Merchant's Shop Open
6 Harpstring Moon 5/4 - Lecture Day
7 Harpstring Moon 5/9 - Annette's Birthday
8 Harpstring Moon 5/10 - Free Time
- Head Chef Challenge
- Rare Monster Sighting
- Anna's Shop Open
- Dark Merchant's Shop Open
9 Harpstring Moon 5/11 - Lecture Day
10 Harpstring Moon 5/17 - Free Time
- Fish of Mystery
- Anna's Shop Open
- Dark Merchant's Shop Open
11 Harpstring Moon 5/18 - Lecture Day
- Raphael's Birthday
12 Harpstring Moon 5/21 - Saint Macuil Day
13 Harpstring Moon 5/24 - Free Time
- Spice Festival
- Rare Monster Sighting
- Anna's Shop Open
- Dark Merchant's Shop Open
14 Harpstring Moon 5/27 - Mercedes's Birthday

Silver Snow Chapter 17 - Part 2 Guide

Taking Fort Merceus Walkthrough Chart

No.Procedure
1 Harpstring Moon 5/30 - Before Mission Day
2[Seteth: Conversation Options]
・Because of the Alliance and Kingdom's sacrifices...
→ Neutral reply
・We cannot let this opportunity pass us by.
→ To be confirmed
3[Ferdinand: Conversation Options]
・Disguises?
→ To be confirmed
・Infiltrate the fort?
→ Neutral reply
4[Seteth: Conversation Options]
・We've beaten him before.
→ Seteth relationship goes up
・Let's be careful.
→ To be confirmed
5 Harpstring Moon 5/31 - Mission Day
6 Win in the "Taking Fort Merceus" mission
7 After the mission, you'll speak with Seteth and your allies
8[Seteth: Conversation Options]
・What legend?
→ To be confirmed
・We need to get out of here.
→ Neutral reply
9[Seteth: Conversation Options]
・Let's give up.
→ To be confirmed
・Let's attack the Imperial capital.
→ To be confirmed
・Let's return to the monastery.
→ Neutral reply
10[Seteth: Conversation Options]
・Now you've got it.
→ Neutral reply
・Whatever do you mean?
→ To be confirmed
11After the conversation, the next chapter: "The Chaos of War" will begin

6. Battle Will Grant You Dark Seal

Battle Will Grant You Dark Seal

This month's battle will have you face the Death Knight again. When you defeat him, you'll receive another Dark Seal so you can certify a male unit into a Dark Mage or Dark Bishop.

Taking Fort Merceus Battle Tips

Defeat Death Knight Before He Runs To Win Battle

Defeat Death Knight Before He Runs To Win Battle

The main commander in this battle is the Death Knight so you need to defeat him to claim victory. When you approach him, he'll try to run away so be sure to defeat him before he leaves the map.

Place Units In Tiles To Stop Reinforcements

Place Units In Tiles To Stop Reinforcements

Reinforcements in this fight will keep coming in from specific tiles around the map. To stop the reinforcements from pouring in, you can leave a unit in the specific tiles

Two Chests Contain Items In Map

Two Chests Contain Items In Map

There are two chests in the right side of the map and they contain a Speedwing and Aurora Shield. Use either a Flier unit or Mounted unit with Chest Keys to quickly grab the items before the fight ends.

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Story Strategy Guide
White Clouds (Academy)
Azure Moon (Dimitri)
Verdant Wind (Claude)
Crimson Flower (Edelgard)
Silver Snow (Church)
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