Secrets
Costumes, the Alchemy Room's medallions, plate-key combinations, and the four different ways the game can end.
Alchemy Rooms & Medallions
Perpetua Machina
Alchemy MechanicA slot-machine-style device that turns Medallions into items: drop one in, stop the spinning colors by pressing the action button, and matching colors across the slots pays out. Which Medallion you feed the machine decides what comes back. If you're ever completely out of basic supplies, the bowl in the room also hands out free Magnesia and Antimony Powder.
- Medallion (random colors) — can produce almost anything
- Album Medallion, white — Fiona's recovery items
- Viola Medallion, blue — Hewie's recovery items
- Viride Medallion, green — Fiona's equipment
- Rubrum Medallion, red — battle weapons
- Magist Medallion, gold — the rarest tier, high-value items across the board
Plate-Key Equipment Machine
Alchemy MechanicAppears next to the Perpetua Machina in every Alchemy Room once you've cleared the game. It doesn't take Medallions — it takes finished Plate Keys.
- Trades a completed Plate Key for its matching piece of equipment
Plate Keys
Several doors and devices in the castle don't take an ordinary key — they take a word spelled out on a plate-key machine's lettered tiles. Type the right word, and the completed plate-key unlocks its matching lock, statue, or box.
EMETH Plate-Key
Plate KeyThe "default" activation word for the Golem — used before you have access to METH.
- No item reward — activates the Golem
METH Plate-Key
Plate KeySwapping in METH instead of the default EMETH word turns the same Golem interaction into an item reward.
- Obsidian Choker
MAGNUS Plate-Key
Plate KeyOpens the red box among the dolls, paying out two pieces of equipment at once.
- Jade Choker
- Inquisitor Earrings
ADAMAS Plate-Key
Plate KeyOnly usable post-completion, on the plate-key equipment machine that appears next to the Perpetua Machina.
- Diamond Choker
ALCHYMIA Plate-Key
Plate KeyUsed on the same post-completion equipment machine as ADAMAS, MORGAN, and POWDER.
- Alchemist Earrings
MORGAN Plate-Key
Plate KeyUsed on the same post-completion equipment machine as ADAMAS, ALCHYMIA, and POWDER.
- Fairy Earrings
POWDER Plate-Key
Plate KeyUsed on the same post-completion equipment machine as ADAMAS, ALCHYMIA, and MORGAN.
- Burst Boots
REST Plate-Key
Plate KeyThe only plate-key built by combining two partial ones instead of being spelled out directly.
- Opens the Castle Restroom
Easter Eggs
Para-Para Dance
Easter EggThe game's one pure joke Easter egg — inserting the SALTATIO plate-key into the Crypt's Rock Golem sets off a ten-second dance routine instead of anything ominous. It also happens to fully heal Fiona, so it's worth using again whenever you're back in the Crypt and running low.
- A short dance cutscene
- Fully restores Fiona's stamina
Water Tower Machine
Water Tower Trade Machine
Trade MechanicLets you trade in certain key items you're still holding onto for something new, instead of using them for their original purpose. It's a separate system from the Prima Materia refining chain that produces the White Godstone elsewhere — check this machine before assuming a spare key item is dead weight.
- Accepts Cracked Plate-Keys
- Accepts Wilted Flowers
- Accepts the Smudged Key
- Accepts the Castle Gate Key
- Accepts a Jupiter Key you've already used once
- Accepts the three Mansion Library books
Costumes
Fiona's Alternate Outfits
Costume UnlockClearing the game unlocks a growing wardrobe of alternate outfits for Fiona, some tied to a specific ending rather than just completion — try each on from the closet in the Castle Bedroom.
- Fiona B — hair down, barefoot (finish the game once)
- Under the Scalpel (finish the game once)
- Illegal in Some States — whip replaces her kick (finish the game once)
- Fiona the Frog — reduced backstep stamina cost (earn Ending C)
- Texas Cowgirl — a slow prop gun replaces her kick (earn Ending A)
Hewie's Alternate Looks
Costume UnlockHewie gets his own alternate looks tied to prior clears — the Stuffed Dog Outfit in particular is worth chasing on a Hard Mode run, since making him unkillable removes the game's harshest fail state.
- Brown-and-black German Shepherd — stronger, but harder to control
- Stuffed Dog Outfit — makes Hewie invincible (he can still tire out or need feeding)
Unlockables
The Secret Room
Bonus ContentA repurposed version of the Castle Bedroom, unlocked once you've cleared the game. Alongside the usual bonus-content gallery, it hides a genuinely different minigame: you play as Hewie, guiding Fiona away from a pursuer toward each level's goal, escalating from Debilitas up through Flaming Lorenzo.
- Costume try-on
- Titles list (shows every plate-key code you've unlocked)
- Concept art and character designs
- The full music list and every cutscene you've seen
- A 4-level minigame played as Hewie
Hard Mode
Game Mode UnlockA genuinely different run rather than a stat bump: Hewie can now die outright if his health hits critical, Camomile and Lavender are removed from the world entirely, Failures show up far earlier (including during the very first Debilitas chase), and Luminessants are more numerous and respawn after you lose them. Every pursuer also gets a palette-swapped redesign. Treat it as a New Game+ challenge run, not the way to experience the story for the first time.
- Unlocks Hewie's Stuffed Dog Outfit on a subsequent clear
Endings
Ending A — Fortes Fortuna Juvat
Story EndingFiona and Hewie reach the castle gate together. As they leave, Debilitas himself appears one last time — not to chase them, but to bow respectfully before going back to tending the garden alone.
- The best ending for both Fiona and Hewie
- Unlocks Fiona's Texas Cowgirl costume
Ending B — Ignis Aurum Probat
Story EndingFiona and Hewie make it out through the castle gate with no extra epilogue beat — a solid escape, just without the added closure Ending A gives Debilitas.
- A clean escape for Fiona and Hewie
Ending C — Dona Nobis Pacem
Story EndingThis route lets Fiona leave through the front gate long before the story would normally end. As she and Hewie escape, Lorenzo chases after her down the stairs, collapsing before he can stop her — a rare glimpse that he wanted more than just her Azoth.
- An early exit that skips the rest of the game
- Unlocks Fiona's Frog costume
Ending D — Tu Fui, Ego Eris
Story EndingWithout Hewie there to save her, Fiona is captured at the cliff. The game closes on her, months later, kept in what used to be the castle bedroom — pregnant, and no longer entirely herself.
- The worst outcome in the game
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