Dungeons

Dungeons are short runs of rooms ending in a boss. Each one pays a different resource, and each resource feeds a system. They open with the Imperial Treasury on the Stage 0-4 clear.

Which dungeon feeds what

Dungeon	Main pay	Feeds
Imperial Treasury	Pet eggs	Pets
Legion Foundry	Medals	Combat skills (LUDUS)
Frontier Bastion	Expedition Torches	Weekly Expedition
Sealed Scriptorium	Enchantment Playbooks	Lucia the Augur
The four Sanctums	Essence + attuned gear	Morta the Soulbinder and Doctrines
Foundry, Bastion, Scriptorium, Sanctums	Forge Materials (side pay)	Faber the Smith
Every dungeon (first clears)	Seals	Faber the Smith (top upgrades)

Every dungeon also pays gold. Forge Materials only drop once Faber the Smith is open (Stage V-1). Some dungeons sometimes add a bonus Enchantment Playbook to a won run.

How a run works

Open a dungeon and press CHALLENGE to fight its next stage. It costs a key.
The run walks through rooms of monsters, from easy to hard, and ends with the dungeon's boss. Early stages have one room; later ones have more, and from chapter V an animal joins every room.
Health carries through the whole run: there is no healing at the doors.
Only a win spends a key. A lost run, or one you LEAVE before a fight has ended it, gives the key back.
A stage's first win also pays a Seal.
A stage you have won becomes your SWEEP: spend a key to collect that stage's pay at once, without fighting (SWEEP ALL uses every key). Sweeps never pay the bonus Playbook, Sanctum gear or the first-clear Seal.
Dungeons cost no Energy and pay no XP.

Stages

Every dungeon has 49 stages, spelled like the Hunt's: chapters 0 to X (0-1, 0-2 ... X-5). A dungeon's first stage stands at the level it opens at and its last at level 100. A stage above your level is locked until you reach it ("STAGE VI-4 / LEVEL 63").

Keys

Each of the four Neutral dungeons has its own keys: 2 a day (at midnight UTC), holding up to 4. The four Sanctums share Affinity Keys: 4 a day, holding up to 8. A dungeon card shows FULL when its keys are at the cap, so spend them before the next midnight.