Most of Queen's Domain secrets are the same trick: a wall that is not really a wall. There is no outline, no glow and no sound, and the crosshair only tells you a wall is interactable once you are already pointing straight at it — so the walls are found by trying, not by looking.

How to spot a hidden wall

Three habits cover most of them:

  • Interact with every suspicious wall. The prompt appears when you are aimed at a passable one, so a blank wall that opens is the normal case.
  • Use Photo Mode to scan rooms. Photo Mode sees the room without the fog of war, which is the fastest way to find a passage you walked past.
  • Do not rely on the lenses for walls that are marked. A wall with a skeleton pointing at it, or vines growing out of it, is never highlighted by any of the four lenses — so a lens telling you "nothing here" does not mean the wall is solid.

The four lenses — Puwema's, Jigeki's, Wodaso's and Sipeha's — combine with the Mask of Second Sight to reveal hidden rooms and glowing sigils. The same combination opens a whole secret room on the first floor of the Ancient World cave that holds one of every meal type except pizza.

For what each kill actually fills in, the bestiary guide covers the entries and where the missing ones are.

Queen's Domain secrets: the passages near the start

Three passages sit in the early area, and all three are worth taking:

  1. The beach wall straight across from the bridge to the skeleton boss. A skeleton points at it.
  2. The area with the large tree and the shortcut door. A shrub on the wall near the door hides a passage leading to a room with three trident slots.
  3. The graveyard where you pick up the key for the boss door. The wall to the bottom left as you enter hides another passage.

The trident slots room is one of the places the Trident Emblems get used, so it is in the Trident Emblem guide too.

The tomb hall walls

In the tomb hall where you find the boss door key there are two more hidden walls:

  • One opposite the chest, which leads to a gourmet meal.
  • One on the wall with the fallen brazier, which leads to the Pandora Blade.

The Pandora Blade is the single most useful traversal item in the game, so that wall is worth finding twice. Where it is and what it does is in the Pandora Blade guide.

The Stone Cube and the Wodaso puzzle

The Stone Cube is an early secret and the only thing that solves the Wodaso pillar puzzle. It is not in a chest: you drop off the side of the main island at the edge of the graveyard area where you got your first Wind Gem, facing the duck shop island. There is a second way — below the cliffs near the crypt where you get the rusty greatsword.

The Wodaso puzzle itself is in the Deimpo Mausoleum, in the room with the many moving pillars, where two Wodaso sigils sit on tombstones. The details of that room are in the Deimpo Mausoleum guide.

The collection that unlocks the last ending

The 69 Strange Silver Etched Skulls are the biggest collection in the game. Bring them all to the NPC at the door in the Petrified Garden to open the way to the dark ritual, which is the trigger for the last ending. Donating them pays out rewards as you go, and one of the later rewards helps you at level 30.

There is no counter for how many skulls you have handed in, so you have to hunt them blind and hope your last one really is the last one. What else is left after the credits is in the endgame challenges guide.