Queen's Domain has several kinds of keys, and most of them are hidden. This page groups them by type. Facts come from player guides on Steam; we name the guide for each and flag anything only one guide reports. Spoilers ahead.
Where are the Trident keys?
There are five Trident keys (Digitol lists Trident Keys I–V). SquidRadio's walkthrough finds the first ones in Obmuer Temple:
| Key | Where |
|---|---|
| Sapphire Trident Key | On the wall around the waterfall inside Obmuer Temple (SquidRadio, Digitol) |
| Emerald Trident Key | A nook up the stairs guarded by a skeleton archer (SquidRadio); on a skeleton ledge in the upper-left passage (Digitol) |
| Ruby Trident Key | Level the Trident weapon to 5; its head breaks off and becomes this key (SquidRadio) |
| 4th key | From Umbada's shop after you hand over the Gold Duck the Necronomicon drops (SquidRadio) |
| 5th key | To be confirmed: our sources do not say where it is |
What they open:
- One-key, two-key and three-key doors in Obmuer Temple. The three-key gate holds the Engraved Halberd. You can take a key back out after a door opens and reuse it.
- The White Tree Guardian, a hidden boss on the island. Behind a bush to the right of the first dungeon's entrance, along the shortcut road to the Mausoleum, is a hidden wall with three key slots and then two more (PovKetz's bestiary guide; Digitol agrees).
- The Petrified Garden. Steam user bb says you need all four lenses and the five Trident keys there for Ending 4. See Endings.
How do the treasure vault key stones work?
Arceil's Treasure Room guide explains the system: vaults come in three tiers, Blood → Velvet → Jade. There are two Blood vaults, two Velvet vaults and one Jade vault, and each tier's key stone is found inside the tier before.
- Blood Key Stone: at the start of Obmuer Temple, air-dash to the small patch of land with a dead raider, drop into the opening on the right, and go into the dark cave on the left. At the back of a room with pillars, a skeleton sits next to a note. Reading it adds the Blood Key Stone to the shop for 24 Ancient Coins.
- Blood vault 1: Tower of Knowledge basement, after the flesh walls are cleared; the door is in a corner with a glowing mushroom. Inside: the Rusted Greatsword.
- Blood vault 2: Verdant Hollow, up a slope beside the gate to the Rotting Cavern, by dashing into windows in the cliff face. Inside: the Velvet Key Stone.
- Velvet vault 1: from the Neasied wing altar, a cave in the cliff, a hole, a hidden door and an elevator down. Inside: the Rusted Great Morning Star.
- Velvet vault 2: Rotting Cavern, behind a sealed door that needs four dark triangular slates (or through a hole in the wall past a broken bridge). Inside: the Jade Key Stone.
- Jade vault: Deimpo Mausoleum, along the wall of the giant stairwell through the right door from the wing altar. Inside: the Rusted Leaf Blade.
What the vault weapons evolve into is on the weapon evolution page.
Where are the Jigeki key pieces?
Two guides list the same three pieces:
- Top piece: the Deimpo Mausoleum spider cave. Ride the stone pillar elevator to the top; a small gap lets you ride it down into a hidden room (SquidRadio, PovKetz, 甘木雨林).
- Middle piece: the Rotting Cavern. Walk through the rotten water until the big fish, the Gigantic Serf, attacks; killing it gives the piece (Скоро рапира, PovKetz, 甘木雨林).
- Bottom piece: under the bridge to Siraatsu Castle in the Ancient World (Скоро рапира, Digitol, 甘木雨林).
Where they go: Скоро рапира says the spot is on top of a cliff on the fish-man island (Obmuer). You collect four Ceremonial Stone Tiaras nearby and set them in this pattern, left to right: first RED-WHITE-WHITE, second WHITE-RED-WHITE, third all WHITE, fourth WHITE-RED-RED. The Cestus's uppercut helps you jump up there. Digitol describes the door as a tall double door with curling serpent carvings and a gold diamond seal. Behind it you fight Irdunuub, Priestess of Jigeki, for the Jigeki Lens. The tiara pattern comes from one guide only and is to be confirmed.
Where are the four lenses?
The lenses fit the Mask of Second Sight, which shows hidden seals and walls. Digitol's guide and 甘木雨林's Chinese lens guide agree on all four:
| Lens | How you get it |
|---|---|
| Puwema | Given by an NPC as part of the main story (the first lens). SquidRadio receives it at Puwema's Rest in the Mausoleum |
| Wodaso | Beat the rooftop enemy on the Deimpo Mausoleum (it drops a teal seal breaker), then reach a small building by the merchant's island with many dashes. 甘木雨林 says five dashes is safest, or four with the Pandora Blade and Rusted Short Sword's special attacks |
| Jigeki | The three key pieces above |
| Sipeha | A chest at the top of the temple in Verdant Hollow, reached from the Rotting Cavern after the Blood Angels |
Collecting all four unlocks the Magic Eyes achievement (Digitol).
What are the Sipeha seals?
Eight seals needed to evolve the Holy Sword for the Akunra ending. Скоро рапира lists them as: two under the Tower of Knowledge, two on the Isle of Neasied (behind secret walls in a room under the teleporter), one in the Deimpo Mausoleum (a secret room on the stairs under the teleporter), one in the Record of Sin, one in the Rotting Cavern (needs the right lens on the Mask) and one on the fish-man island. The same guide warns that Endu must be fully upgraded first, or the game tells you the bond isn't strong enough.