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Spoiler warning: This guide includes puzzle answers, safe codes, and story-related locations. If you want a nudge rather than the solution, start with the clue-first hint in the relevant section and stop before the direct answer.
The game’s casebook and mind map can help you check whether clues are connected, but they do not necessarily reveal the final input. This guide covers the currently documented puzzles through the Chapter 5 Portal Room; it is not a verified list of every late-game or optional-wing puzzle.
Quick answer index
- Chapter 1 — A New Day: Gate fuse box; Apartment 5 safe: 1908.
- Chapter 2 — The Wake-Up Call: Church Trident and obelisk; church watergate: 1672; cursed printing press; ventilation: 1, 1, 2, 2, 2, 2, 3, 3, red switch, 1; Hotel Room 301 safe: 2137.
- Chapter 3 — A Sight for Sore Eyes: Prism stations; Wireless Room brain machine: 13-05-36; hospital storage: 1308.
- Chapter 4 — Time and Tide: Buoy locker; memory safe: 6294; Strange Statue; Sixteen Punishments door: I, IV, IX, XVI; Locker Room safe: 1496.
- Chapter 5: Portal Room device.
Chapter 1 — A New Day
Gate fuse box
Clue-first hint: The circuit is completed with the fuse box found in the Radio Store. Match fuse shapes to the colored wire paths; bays with grey wires are inactive.
Direct solution: Take the fuse box from the Radio Store to the electrical box at the Guard Post. In the three active middle bays, use a straight (I-shaped) fuse to connect the blue wires, a T-shaped fuse for the yellow/green wires, and an L-shaped fuse for the red/orange wires. Validate the arrangement, then pull the lever on the right.
Apartment 5 safe
Clue-first hint: Look for the year associated with the Radio Store’s opening.
Direct solution: Enter 1908. The safe contains handgun ammunition and a Dolorocide healing pill; opening it unlocks The Inheritance achievement.
Chapter 2 — The Wake-Up Call
Church Trident and graveyard obelisk
Clue-first hint: Read the altar note “Call Upon Believers” and the crypt note “First Vision.” The phrase “from the depth to the heights” tells you to enter the god-symbol matches from top to bottom.
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Direct solution: Take the key beside the church blockage switch, use it to open the Star-locked door, and retrieve the Trident. At the graveyard obelisk, set the symbols in this order:
- Yig — Serpent Form
- Tsog-Nar — Crooked Cross
- Gyrh — Spearhead
- Cthylla — Splayed Womb
Step away after setting the symbols: three lightning strikes charge the Trident, and enemies appear during the sequence. Return the charged Trident to its original place. Then take the dagger from the statue nearest the altar and put it in the altar slot to open the basement route.
Church watergate
Clue-first hint: The code uses the church bell’s casting year. The church dates to 1667, and the bell was cast five years later.
Direct solution: Enter 1672.
Cursed printing press
Clue-first hint: Find all three plates, then use the press grid to make every tile the same color.
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Collect the plates from the graveyard mausoleum, the Printing House bedroom reached by the path above the crashed van, and the house north of the Fire Department after the crane moves the whale. Insert all three plates behind the Director’s Office.
Direct solution: The two documented outcomes are:
- Gold grid: A shotgun accessory. A separate code guide names it Cutter’s Sturdy Stock.
- Silver grid: Two Dream Essence.
One guide describes the gold reward generically as a shotgun accessory, while another supplies the specific attachment name. Guides also disagree about which outcome is preferable. Choose based on whether you want a shotgun attachment or Dream Essence for talents; there is no universal best reward. The reported tile-flip instructions are not sufficiently consistent to give a dependable button-by-button sequence here.
Ventilation system
Clue-first hint: Follow the numbered controls in stages, changing to the red switch before the final press.
Direct solution: Press 1 twice, 2 four times, and 3 twice. Switch to red, then press 1 once more.
Devil’s Reef Hotel, Room 301 safe
Clue-first hint: Combine the safe-code letter with the lyrics to “Baby, One More Tide.”
Direct solution: Enter 2137. The safe contains a Voss Aiming Grip pistol attachment and ammunition.
Chapter 3 — A Sight for Sore Eyes
Prism stations
Clue-first hint: There are three stations. Use the pattern in each room and the corresponding symbols in the Investigations tab to orient the rings.
Direct solution: Rotate the three rings at each station until they match that room’s pattern, then validate. The stations are:
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- Priest’s Room off the Chapel: Yellow; align the marker at the lower left.
- Manipulations Room east of Maintenance: Pink; align the marker at the lower right.
Wireless Room brain machine
Clue-first hint: Speak to all three brains before operating the machine. The clue trail includes Old Man’s Mask, Therapeutic Garden, and Medical Records.
Direct solution: After talking to all three brains, enter 13, 05, 36.
Hospital storage padlock
Clue-first hint: The notes provide the four digits; gather them before trying the lock.
Direct solution: Enter 1308. The storage area contains an SMG upgrade.
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Chapter 4 — Time and Tide
Buoy locker / Ezekiel
Clue-first hint: Use the evidence titled “About Ezekiel” and “From Ezekiel’s Wife” to establish the icon order.
Direct solution: Set the symbols to Lighthouse, Ropes, Starfish, Octopus. The locker contains an SMG upgrade. Another guide labels some icons differently, so follow the visible symbols and the wording used here rather than substituting alternate names.
Memory safe
Clue-first hint: Return the Antikythera to Ma, enter the memory through the Memory Relic, and listen to the phantoms for the combination.
Direct solution: Enter 6294. The safe yields a Heart of Stone/Leyden Jar story item.
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Clue-first hint: In the Abandoned Office, use the Heart of Stone and shoot the statues in the order suggested by their figures.
Direct solution: Put the Heart of Stone into the Strange Statue, then shoot Kneeling Woman, Octopus, Sea Creature, Time, Jar, in that order. This is the Heart of Stone sequence; do not confuse it with the separate Frozen Statue sequence involving the Heart of Ice.
Sixteen Punishments door and Locker Room safe
Clue-first hint: The door’s Roman numerals correspond to four punishments. For the safe, use the combination recovered from its clues.
Direct solution: Press I, IV, IX, and XVI in any order, then hold to confirm. The numeral is IX, not XI. The related Locker Room safe code is 1496.
Chapter 5 — Portal Room
Portal device
Clue-first hint: Locate the Engraved Pod north of the Portal Room, across the bridge and beyond a fight. Its patterns correspond to the central device’s adjustable parts.
Direct solution: Bring the Engraved Pod back and mount it on the central device. Rotate the sides, top, and bottom until their patterns match the surrounding designs.
How to use clues without spoiling every puzzle
When you are stuck, check whether the casebook or mind map marks relevant evidence as connected, then inspect the referenced notes and objects in the world. That can confirm you are following the right trail without revealing the final combination or symbol order. Use the direct answers above only for the input you cannot resolve from the clues.
Quick Recap
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