How to get the DLC weapons in Fire Emblem Fortune's Weave

To obtain DLC weapons in Fire Emblem: Fortune's Weave, you must first purchase and download the expansion pass. Once downloaded, an in-game notice will inform you about the new weapons and the associated subquest. Each of the four playable Flame Lords will have a unique subquest, which becomes available by accessing the bulletin board in Dagsion.

This is typically during Chapter 4, depending on the character's progress through the city tutorials and battles. The bulletin board's location can be identified by a gold-orange parchment symbol on the map when a new quest is available. To acquire each Flame Lord's weapon, simply speak with the mysterious individual who issued the quest, located northeast of the market stalls in the city streets.

These DLC weapons, modeled after Hero's Relics from Three Houses, have lower durability ratings than other weapons, meaning combat arts can be used fewer times before the weapon breaks. The good news is that you can upgrade all four Prototype weapons to +2 status, which increases durability and strength. Doing so makes them more powerful than similarly upgraded iron weapons.

If you have already completed a Flame Lord's Part 1, it is recommended to replay their Chapter 12 to obtain the Prototype weapon, as any changes made in Part 1 will only apply to subsequent parts if completed in full.