Dungeon guide & Keys of the Diadem

Choose a dungeon for your current party

This index covers the 32 locations listed by RPG Site ↗. Levels are the guide’s Part I recommendations, not entry requirements or Part III recommendations. “Not listed” means no numeric recommendation was supplied. Checked September 19, 2026; guide-reported, not Kingy save-tested.

Dungeon index

Keys of the Diadem

Part III chest locations: Heretics’ Cave, Enno Isle, Cougar Woodlands, Sand-Shadow Fort and Giant’s-Print Fort. Dungeon and chest source ↗

Access and chest coverage

The index is complete against that source’s location list; the wiki’s room-by-room records are not. The linked source separates Part I and Part III chests and lists route restrictions. Check it before traveling, especially when a dungeon is absent from your map. A displayed location is not proof your current hero can reach it.

Use Paralogues & deadline quests before scheduling a detour. The world map consumes time as you move, and Nintendo recommends using towns and dungeons to gather supplies. Nintendo’s launch tips ↗

Recover between Clashes

Rest Spot food restores HP and magic, but not LP, according to bo3’s item guide ↗. Save limited supplies for the encounters that need them. Check Weapon repair, forging & item economy before leaving town.

Chest coordinates, complete ore tables, respawn timing and route-by-route access are still open records here. No chest contents have been inferred from a dungeon’s name or from another Fire Emblem game.