id: "achievement-roadmap" slug: "achievement-roadmap" order: 12 title: "Achievement Roadmap — Best Order to Unlock All 15 Achievements" description: "Efficient roadmap for unlocking all 15 achievements in The Incident at Galley House in the optimal order." keywords: ["achievement roadmap, best order, unlock order, efficient achievements"] category: "achievements" date: "2026-07-15" lastModified: "2026-07-16" image: "/images/video-rqz9lS2Vjos.webp" video: "rqz9lS2Vjos"
Achievement Roadmap — Best Order to Unlock All 15 Achievements
The Incident at Galley House has 15 Steam achievements, including 5 hidden ones. Rather than discovering achievements haphazardly, following a structured roadmap ensures you earn them in the most efficient order with minimal backtracking. This guide provides a phase-by-phase achievement roadmap, explains why each order matters, and highlights the dependencies between achievements so you never waste time pursuing an achievement you are not yet ready to earn.
Phase 1: Story Progression Achievements (Automatic)
These seven achievements unlock through normal story progression. You cannot miss them if you complete the game, so do not worry about them specifically — just play through the investigation naturally.
| Achievement | How It Unlocks | Estimated Time |
|---|---|---|
| Seance | View your first memory scene | 5-10 minutes |
| A Shocking Revelation | Uncover a major truth | 3-5 hours |
| Still Alive | Identify a surviving character | 4-6 hours |
| Death Note | Mark a character's death on the timeline | 2-4 hours |
| Machine Supervisor | Restore the machine's power (first time) | 1-2 hours |
| Technical Engineer | Restore the machine's power (second time) | 4-6 hours |
| Researcher | Unlock a threshold number of scenes | 5-8 hours |
Why Phase 1 Comes First
These achievements are guaranteed by story progression. Focusing on them first means you will have the foundational knowledge — character identities, scene sequences, and power restoration procedures — needed for the more challenging achievements in later phases. Do not skip ahead to hidden achievements until you have earned most of Phase 1, because the hidden achievements require context from the main story.
Optimization Tips for Phase 1
While Phase 1 achievements are automatic, you can earn them faster:
- Seance — Enter any valid code immediately upon starting the game. You do not need to watch the full scene; the achievement triggers as soon as the scene begins playing.
- Death Note — Mark a death on the timeline as soon as you are reasonably confident. You do not need to be correct — the achievement triggers on the first death marking regardless of accuracy.
- Machine Supervisor / Technical Engineer — Power restoration happens at fixed story points. When the machine loses power, immediately investigate the environment around the machine rather than rewatching old scenes.
Phase 2: Exploration Achievements
After completing the main story, focus on the exploration-based achievements that require you to discover all locations and enter specific codes.
House Tour — Discover All 16 Locations
The House Tour achievement requires discovering every room in Galley House. As you enter codes that reference different locations, the rooms are automatically revealed. By the end of Phase 1, you will likely have discovered most locations naturally. Check your progress by reviewing the location labels you have set.
Efficient approach: Systematically enter codes for each two-letter location code you have not yet discovered. The location guide provides the complete list. Start with ground-floor rooms (EN, LI, KI, DI, QU, ST) which are discovered early, then move to upper-floor rooms (VI, HE, OS, CH, GA, AT, CO, WI, LA, BA).
Full House — Label All 16 Locations
Full House goes beyond House Tour by requiring you to correctly label each room with its two-letter code. If you have been labeling rooms as you discover them (which the beginner guide recommends), you may earn this achievement alongside House Tour. If not, review each discovered location and confirm its label.
Key detail: The two-letter codes are fixed and never change. The most commonly missed room is Wintercote (WI), which is typically discovered last because fewer scene codes reference it.
TYPE HELP — Enter the Reference Code
The TYPE HELP achievement is earned by entering the code "TYPE-HELP" into the memory machine. This is a special meta-code that does not follow the standard Timestamp-Location-Characters format. You can enter it at any time during your investigation, but it makes narrative sense to do so after you have completed most of the main story, as the resulting meta-scene references the game's history.
Efficient approach: Enter TYPE-HELP as soon as you discover the code system. The achievement pops immediately, and the scene it unlocks provides interesting meta-context without spoiling the main mystery.
Phase 3: Hidden Achievements
The five hidden achievements require specific actions beyond normal progression. These should be pursued after Phase 1 and 2 because they require knowledge and context from the main investigation.
Hallucination — Find the Hidden Scene
The Hallucination achievement requires entering a specific hidden code that triggers a supernatural scene outside the normal timeline. The code is not given to you explicitly — you must find it through investigation.
Strategy: After completing the main story, use the keyword search tool to look for terms like "hallucination," "vision," "specter," and "supernatural." The clues are embedded in Chapel (CH) scenes. If you cannot find the code, request progressive hints — they will guide you toward it without revealing the answer immediately.
Inciting Incident — Discover the Root Cause
The Inciting Incident achievement is earned by making the correct meta-plot deduction about what truly started the events at Galley House. This requires connecting information from both the past and present timelines.
Strategy: Complete all Part 1 and Part 2 scenes before attempting this deduction. The meta-plot requires evidence from both timelines. Use the deduction guide for strategies on approaching the Level 2 deduction.
Not Over Yet — Find Post-Credits Content
After the main story appears to end, continue operating the machine. The Not Over Yet achievement rewards persistence — there is additional content after the apparent conclusion.
Strategy: When the credits roll or the story seems to end, do not close the game. Continue entering codes and exploring the machine. New scenes become available after the main story milestones. This achievement is about curiosity and refusing to stop when the game tells you to.
Spectronoeticist — View Every Scene
Spectronoeticist is the hardest and final achievement. It requires viewing every memory scene in the game, including all hidden scenes.
Strategy: Use the complete scene codes list as a checklist. Systematically enter each code and mark it off. After viewing all known codes, use the keyword search tool to find scenes you might have missed. Request hints for any remaining gaps.
Phase 4: Completionist Cleanup
After earning all other achievements, do a final sweep to confirm you have viewed every scene:
| Scene Category | Count | How to Verify |
|---|---|---|
| Part 1 main scenes (01-26) | 26 | Check each timestamp against the scene codes list |
| Part 2 present-day scenes | Multiple | Verify all Part 2 codes have been entered |
| Scene 00 (prologue) | 1 | Enter a code with timestamp 00 |
| TYPE HELP meta-scene | 1 | Enter the TYPE-HELP code |
| Hallucination scene | 1 | Find through investigation or hints |
| +64 hidden scenes | Multiple | Enter codes with +64 character modifier |
| Other optional scenes | Varies | Use keyword search to find remaining scenes |
Complete Achievement Dependency Map
Understanding which achievements depend on others helps you plan your roadmap:
| Achievement | Prerequisites | Unlocks |
|---|---|---|
| Seance | None | Researcher (partial) |
| Death Note | Seance (to understand the system) | None |
| Machine Supervisor | None | Technical Engineer |
| Technical Engineer | Machine Supervisor | None |
| House Tour | Multiple scenes viewed | Full House |
| Full House | House Tour | None |
| TYPE HELP | Code system understanding | Spectronoeticist (partial) |
| Hallucination | Chapel scenes, keyword search | Spectronoeticist (partial) |
| Inciting Incident | All main scenes, both timelines | None |
| Not Over Yet | Main story completion | Spectronoeticist (partial) |
| Spectronoeticist | ALL other achievements' scenes | None |
Estimated Timeline
Based on player reports and the game's structure, here is an estimated timeline for completing all 15 achievements:
| Phase | Achievements | Estimated Time | Cumulative Time |
|---|---|---|---|
| Phase 1 | 7 (automatic) | 6-10 hours | 6-10 hours |
| Phase 2 | 3 (exploration) | 1-2 hours | 7-12 hours |
| Phase 3 | 4 (hidden) | 2-5 hours | 9-17 hours |
| Phase 4 | 1 (Spectronoeticist) | 1-3 hours | 10-20 hours |
Players who use hints frequently will trend toward the lower end of these estimates. Players who refuse hints and insist on solving everything independently will trend toward the higher end.
Achievement Difficulty Ranking
From easiest to hardest:
- Seance — Impossible to miss; triggers on the first scene
- Death Note — Triggers on first death marking; no accuracy required
- TYPE HELP — Just enter a known code; no investigation needed
- Machine Supervisor — Automatic story progression
- Technical Engineer — Automatic story progression
- House Tour — Natural exploration; requires entering codes for all locations
- Full House — Requires correct labeling of all 16 rooms
- Researcher — Automatic but requires substantial scene viewing
- A Shocking Revelation — Automatic story progression
- Still Alive — Requires correct identification of a surviving character
- Not Over Yet — Requires continuing after the story "ends"
- Hallucination — Requires finding a hidden code through investigation
- Inciting Incident — Requires correct meta-plot deduction
- Spectronoeticist — Requires viewing every single scene
- (Most are roughly equal in difficulty; the ranking reflects incremental effort)
For detailed instructions on each achievement, see the achievement guide and the hidden achievements guide. For the scene codes you need for Spectronoeticist, visit the scene codes page.
FAQ
Can I earn all achievements in a single playthrough?
Yes, all 15 achievements can be earned in a single playthrough. The game does not have mutually exclusive achievements or choices that prevent you from earning certain ones. Follow the roadmap above for the most efficient single-playthrough completion.
Do hints affect achievements?
No. There is no penalty for using hints, and hint usage does not prevent any achievement from unlocking. You can use the progressive hint system as much as needed without affecting your achievement progress.
What happens if I miss the Not Over Yet achievement?
If you stop playing after the main story ends and close the game, you can reload your save and continue from that point. The game's auto-save system preserves your progress at the story conclusion, so you can resume and earn Not Over Yet at any time.
How do I know if I am close to Spectronoeticist?
The Spectronoeticist achievement does not have a visible progress tracker in Steam. To gauge your progress, compare the scenes you have viewed against the complete scene codes list. If you have earned all other achievements, you are likely close to Spectronoeticist — the remaining scenes are probably the hidden and optional ones.