Queen's Domain Forgotten Rooms: Where to Find Every Hidden Treasure Vault

Some of the best loot in Queen's Domain is not on the main path. The game tucks away treasure vaults, secret caves and dead-end dungeon corridors that many players walk right past. If you want the rare weapons and achievements, you need a plan for the Queen's Domain forgotten rooms, and this guide gives you one.

We will cover how to unlock the first key stone, where all five vaults sit, what each one rewards, and how to escape the confusing dungeon areas that trap new players. Everything here is based on a community Steam guide and player walkthrough footage, so treat route details as community reports and expect small differences between playthroughs.

What Are the Queen's Domain Forgotten Rooms?

The forgotten rooms are optional vaults hidden across the map. They come in three tiers, named after their key stones: Blood, Velvet and Jade. Each tier needs a matching key stone to open, and the stones themselves are stored inside earlier vaults, so the content forms a chain.

According to community reports, there are five treasure rooms in total. Opening them and claiming the weapons inside also counts toward a few achievements, which makes them worth the detour even if you only care about completion.

Order matters. You start with the Blood tier, use what you find to reach Velvet, and finish with Jade. The first Blood key stone is the only one you must get from outside a vault.

How to Get the First Key Stone

Before any vault will open, you need the Blood Key Stone. Player experience suggests this is the step people miss most, because it starts in an early area and is easy to overlook.

1. Head to the start of Obmuer Temple and push through the water section.
2. Stop at the foot of the slope that leads up to skeletons and barnacles.
3. From the platform edge, air dash to the small patch of land holding the corpse of one of Aganmi's raiders.
4. Drop into the temple opening on your right, then take the dark cave on the left.
5. Walk straight until you reach a ledge overlooking a large pillared room.
6. Cross to the far side, enter the open vault, and read the note beside the sitting skeleton.

Reading the note adds the Blood Key Stone to the duck lady's shop for 24 ancient coins. Save up before you go, since you will not be able to buy it otherwise. The other two key stones are hidden inside the treasure rooms themselves, so no more shopping is needed for keys.

Blood Treasure Rooms

Tower of Knowledge Basement

The first Blood vault sits below the Tower of Knowledge. You need to defeat the area boss so the flesh growths clear out. After that, a room full of candle crawlers opens up. Kill them all, then look in a corner near a glowing mushroom to find the vault door.

A shortcut from a community commenter: solve the puzzle above the water temple on the highest tower. You need three wind gems and the cestus, which you should already own after finishing the water temple. Completing the puzzle opens the tower top, and you can drop straight into the temple below.

Inside is the Rusted Greatsword. At level 10 it evolves into Wodaso's Holy Lightning and unlocks the Scaled Greatsword in the shop for 10 ancient coins. It is slow but hits hard, and its secondary attack sends a sweep of lightning in front of you.

Verdant Hollow

The second Blood vault is in the Verdant Hollow. The guide author prefers this route:

• Go to the Petrified Garden.
• Leave through the gate connecting the Verdant Hollow to the Rotting Cavern.
• Climb the slope beside the gates.
• From the ledge near the cave, air dash into the windows on the cliff face.
• Walk into the cave. The vault door is through a doorway on your left in the dark room.

You can also arrive from the Rotting Cavern wing altar or ride the elevator up from the Verdant Hollow wing altar. This vault holds the Velvet Keystone, so you need it before moving on.

Velvet Treasure Rooms

Neasied Cave Vault

Teleport to the Neasied wing altar, the starting area. Beside the altar area is a cave in the cliff face. Follow it to the back, drop down a hole, and look for a hidden door at the rear of the room below. Follow that path until you reach an elevator, ride it down, and the vault sits just past two pillars near the entrance.

The reward is the Rusted Great Morning Star. At level 10 it becomes Jigeki's Rot, which has a close-range explosion as its secondary attack, and it unlocks the Bronze Great Morning Star in the shop for 10 ancient coins.

Rotting Cavern Vault

From the Rotting Cavern wing altar, look for a shrine-like structure and follow the path toward it. It ends at a sealed door that needs four dark triangular slate pieces from the surrounding area, similar to the Obmuer Temple entrance.

There is a faster option. Reach the area above the wing altar with the crystal monument, either by taking the elevator from the connecting area or by cestus hopping onto a wing altar prong and dashing over. Cross the broken bridge and you will find a hole in the wall that leads to the same vault. This room contains the Jade Key Stone.

Jade Treasure Room in Deimpo Mausoleum

The last vault is deep in Deimpo Mausoleum. From the Deimpo Mausoleum wing altar, take the right door to the giant stairwell. As you descend, the vault door is set into the wall along the way, so keep your eyes on the side rather than the stairs.

Inside is the Rusted Leaf Blade. At level 10 it evolves into Puwema's Leaf Blade, unlocking the Gilded Leaf Blade for 10 ancient coins and the Ring of Wind for 30 ancient coins. The Ring of Wind throws slashing wind discs with a maximum charge of 4, and the Leaf Blade's secondary attack copies it. Some players feel it is underwhelming for a final reward, so judge it by your own build.

Escaping the Forgotten Dungeon Area

Some players also get stuck in a dungeon-style section with several cell blocks. A video walkthrough shows a simple exit, and community reports back it up:

• Run along the first two cell areas without stopping.
• Look for a burning brazier.
• Turn left and go uphill, hugging the wall the whole way.
• Keep following the wall until you spot a hole in it, then step through.

If you miss the hole, retrace to the brazier and restart the wall-hugging. The gap is easy to miss in dim lighting, so go slowly once you start climbing.

Tips for a Smooth Run

• Bring at least 24 ancient coins before you hunt for the first key stone.
• Unlock wing altars as you go so you can teleport back to each vault area.
• Get the cestus and wind gems early, since several shortcuts rely on air dashing and cestus hopping.
• Level each rusted weapon to 10 to trigger its evolution and shop unlocks.
• Remember that route descriptions come from player experience, so landmarks may look slightly different on your screen.

For more background on the game itself, you can visit the Queen's Domain page on Steam to check the latest updates and community guides.

FAQ

How many Queen's Domain forgotten rooms are there?

Community reports list five treasure vaults: two Blood, two Velvet and one Jade. Each tier unlocks the next, so you should clear them in that order.

Where do I get the first key stone?

Go to Obmuer Temple, reach the cave beyond the raider's corpse, and read the note by the skeleton in the vault. The Blood Key Stone then appears in the duck lady's shop for 24 ancient coins.

Do the vault weapons matter for achievements?

Yes. According to the guide author, opening the vaults and collecting the weapons inside contributes to a few achievements, so skipping them can leave your completion list incomplete.

What if I get trapped in a dungeon area?

Run past the first two cell blocks to a burning brazier, go left and uphill along the wall, and exit through the hole in the wall. Players say this is the quickest way out of the Queen's Domain forgotten rooms area that confuses newcomers.