hidden-achievements-guide

id: "hidden-achievements-guide" slug: "hidden-achievements-guide" order: 2 title: "The Incident at Galley House Hidden Achievements — How to Unlock All 5 Secret Achievements" description: "Detailed guide to unlocking all 5 hidden achievements in The Incident at Galley House. Hallucination, Spectronoeticist, Inciting Incident, Not Over Yet, and Full House." keywords: ["The Incident at Galley House hidden achievements, secret achievements, Hallucination, Spectronoeticist, Full House, Inciting Incident"] category: "achievements" date: "2026-07-15" lastModified: "2026-07-16" image: "/images/video-TS7Dhoek43g.webp" video: "TS7Dhoek43g"

Hidden Achievements Guide for The Incident at Galley House

The Incident at Galley House has 5 hidden achievements that do not appear in the standard Steam achievement list until you unlock them. These achievements require specific actions beyond normal story progression — finding hidden scenes, completing all content, and making meta-plot deductions. This guide provides detailed instructions for unlocking each one, organized from easiest to hardest.

TYPE HELP — The Easiest Hidden Achievement

What It Is

The TYPE HELP achievement is earned by entering the code "TYPE-HELP" into the memory machine. This is a deliberate nod to the original Type Help browser game that inspired The Incident at Galley House. The meta-scene it triggers pays homage to the game's text-only origins and provides a bridge between the two versions.

How to Unlock

Simply type "TYPE-HELP" (or "TYPE HELP") into the machine's code entry field. This special code does not follow the normal Timestamp-Location-Characters format — it is a keyword that the machine recognizes independently.

When to enter it: You can enter this code at any time during your investigation. Many players enter it immediately after the tutorial, earning both Seance and TYPE HELP in quick succession. Others prefer to wait until after completing the main story for narrative symmetry. There is no wrong time.

Tips

• This is the easiest hidden achievement to earn because the code is a known reference
• The meta-scene it unlocks counts toward Spectronoeticist
• There is no penalty for entering this code at any point

Full House — The Location Achievement

What It Is

The Full House achievement requires labeling all 16 locations in Galley House. This is similar to the House Tour achievement but specifically requires correctly labeling each room with its two-letter code on the deduction board or location interface.

How to Unlock

1. Discover all 16 location codes by entering codes that reference each room
2. Label each location with its correct two-letter code
3. Confirm all labels on the deduction board

Complete Location Code List

Tips

• The two-letter codes are fixed and never change between playthroughs
• Most ground-floor rooms are discovered early; upper-floor rooms come later
• Wintercote (WI) is typically the last room players discover
• If you have earned House Tour, you likely have most of what you need for Full House — you just need to confirm the labels

Hallucination — The Hidden Scene Achievement

What It Is

The Hallucination achievement is earned by viewing a hidden supernatural scene that exists outside the normal timeline. It is one of the more mysterious achievements in the game and requires finding a specific code that is not part of the standard scene sequence.

How to Unlock

The Hallucination code is hidden within the game's narrative. To find it:

1. Pay attention to scenes involving the Chapel (CH) — the supernatural center of Galley House
2. Listen for dialogue that references visions, specters, or hallucinations — characters may describe experiencing unusual phenomena
3. Use the keyword search tool to search for "hallucination," "vision," and "specter" in dialogue transcripts
4. The code format follows the standard pattern but uses a special combination of timestamp, location, and characters
5. Request hints from the progressive hint system if you cannot find the code through investigation

The Hint Progression

• Hint 1: Points toward the general category of scenes containing Hallucination clues
• Hint 2: Narrows the focus to specific locations (the Chapel and related rooms)
• Hint 3: Provides near-complete guidance about the correct code
• Hint 4: Reveals the code directly

Tips

• The Hallucination scene is not required to complete the main story, only for this achievement and Spectronoeticist
• The scene contains supernatural content that expands on the game's lore and provides meta-plot evidence
• Finding this code rewards thorough investigation and attention to subtle narrative clues
• The Hallucination scene is essential for understanding the supernatural elements that the meta-plot addresses

Inciting Incident — The Meta-Plot Achievement

What It Is

The Inciting Incident achievement is earned by discovering the event that started everything — the root cause of the deadly night at Galley House. This achievement is tied to the meta-plot, the deepest layer of the mystery.

How to Unlock

This achievement requires connecting information from both timelines:

1. View scenes from both Part 1 and Part 2 — The meta-plot requires evidence from both eras
2. Look for the connection between the Galley family, D&M, and the supernatural elements
3. Make the correct deduction on the deduction board about the overarching cause
4. The meta-plot deduction is required — you cannot earn this through scene viewing alone

Investigation Approach

The meta-plot cannot be solved until you have viewed a substantial number of scenes from both timelines. Key areas to investigate:

• Chapel (CH) scenes — The supernatural center of the mystery
• D&M present-day scenes — The company's connection to the past
• Galley family references — Edmund and Rupert's family history
• Hidden character scenes — Person 12, Person K, and Rupert Galley provide crucial context

Tips

• This achievement is tied to the meta-plot, which is the deepest layer of the mystery
• You need a thorough understanding of both timelines
• Request hints if you are struggling with the meta-plot deduction — there is no penalty
• The deduction guide provides strategies for approaching the Level 2 deduction

Not Over Yet — The Post-Credits Achievement

What It Is

The Not Over Yet achievement rewards players who continue investigating after the main story appears to end. There is additional post-credits content that reveals more about the meta-plot.

How to Unlock

1. Complete the main story — All primary deductions resolved
2. Continue operating the machine after the apparent conclusion
3. Look for new scenes that become available after the story "ends"
4. Enter codes and explore — new content will appear

Tips

• Do not close the game or stop playing when the credits seem to indicate the end
• The post-credits content is accessed through normal code input
• This achievement rewards persistence and curiosity
• The post-credits content provides some of the most significant meta-plot revelations
• Continuing to investigate after the credits is also essential for Spectronoeticist

Spectronoeticist — The Ultimate Completion Achievement

What It Is

Spectronoeticist is the hardest achievement in the game. It requires viewing every single memory scene, including all main scenes, hidden scenes, and special scenes.

How to Unlock

You must find and view all of the following:

Strategy

1. Use the complete scene codes list as a checklist — Check off each code after viewing
2. Systematically enter each code and mark it off
3. Use the keyword search tool to find scenes you might have missed
4. Request hints for any gaps in your progress
5. Start with the easy categories (main scenes, TYPE HELP, Scene 00) and progress to harder ones (Hallucination, +64)

Common Mistakes

• Missing Scene 00 — Many players never try timestamp 00
• Forgetting TYPE HELP — The meta-scene counts toward completion
• Incomplete location discovery — Undiscovered rooms block access to their scenes
• Stopping at the story's end — Post-credits scenes are easy to miss

See the dedicated Spectronoeticist achievement guide for a detailed step-by-step completion strategy.

Achievement Completion Strategy

For the most efficient path to 100% completion:

1. Play through the main story — Earns all story and deduction achievements
2. Discover all 16 locations — Earns House Tour and Full House
3. Enter TYPE HELP — Earns the TYPE HELP achievement
4. Find the Hallucination scene — Earns Hallucination
5. Solve the meta-plot — Earns Inciting Incident
6. Explore post-credits — Earns Not Over Yet
7. View every scene — Earns Spectronoeticist (the final achievement)

Following this roadmap ensures you earn achievements in a natural order without unnecessary backtracking. For the complete achievement guide including non-hidden achievements, see the main achievement page.

FAQ

Are hidden achievements harder than regular ones?

Generally yes. The hidden achievements require specific actions beyond normal story progression, while regular achievements unlock automatically. TYPE HELP is the exception — it is very easy despite being hidden.

Can I earn all hidden achievements in one playthrough?

Yes. All 5 hidden achievements can be earned in a single playthrough. None are mutually exclusive or require starting over.

Will hints reveal the hidden achievement requirements?

Hints can guide you toward the scenes needed for hidden achievements (particularly Hallucination and Inciting Incident), but the hint system does not directly reference achievements. The hints focus on helping you find scenes and make deductions, which incidentally unlocks the related achievements.

What happens if I miss a hidden achievement during my playthrough?

You can always go back and earn missed achievements. The game's auto-save system preserves your progress, and you can continue investigating after the main story to find hidden scenes and complete remaining deductions.