Chaos;Head NoAH Completion Guide [UPDATED FOR COZ PATCH]

A guide to achieving all endings in Chaos;Head NoAH.

Introduction

Please note that this guide is intended for use with the Committee of Zero overhaul patch.

If you haven't already, we highly recommend installing this patch; it introduces a wide range of improvements to the base CHAOS;HEAD NOAH experience, including (but not limited to) an enhanced, series-consistent translation, the restoration of censored story content, numerous bug fixes, and much more. A full list of improvements can be found on the project page.

Preface: The Delusion Trigger

At different points in Chaos;Head NoAH, you will come into contact with the “Delusion Trigger” system. Through it, you can choose if the protagonist experiences a positive delusion, a negative delusion, or no delusion at all.


Click the green button or press Left Trigger on controller to lock into a positive delusion; click the red button or press Right Trigger to lock into a negative delusion; or proceed normally to stay in reality.

Silent Sky (Ending A)

This is the game's common route; it is required in order to access the rest of the game.

Choose any delusions you wish.

There is one bad ending in this route, triggered by making too many mistakes on a certain set of choices; it is recommended to try and solve it yourself first, but the answers will be below should you need them.

Once you reach this ending, certain delusions will now appear with YES/NO prompts on your next playthrough. As a general rule, in order to reach a character route, you must enter a specific delusion for each character and answer its subsequent prompts correctly.

Bad Ending:

Chapter 6
To get the bad ending, invert the answers below.

To proceed with the Common Route, select:
YES → YES → NO → NO → YES

Crying Sky (Ending B)

This route is the sole exception to the rule mentioned before; rather than simply selecting a certain delusion and answering the prompts correctly, it requires a number of specific delusions to be viewed.

Start a new game, then view at least 10 of the following 18 delusions. Skip any route question prompts you might encounter along the away by giving only YES answers, and avoid the Bad Ending in Chapter 6 by answering those questions correctly.

Chapter 1
Neutral: I felt bad[...]
Neutral: “...!”

Chapter 2
Positive: ...looked at me.
Positive: “Hey, Neidhardt[...]”

Chapter 3
Positive: Dammit, this was not the time...
Negative: There were only five calls[...]

Chapter 4
Neutral: In this small, private room[...]
Negative: The police...

Chapter 5
Positive: Here's another example.
Negative: ...!

Chapter 6
Positive: Discouraged, I hung up the phone.
Neutral: Why were they fixated on me?

Chapter 7
Negative: Regardless, why had I been brought here?
Negative: “H-Hey, um[...]”

Chapter 8
Neutral: The hospital room had[...]
Negative: Gladioul[...]

Chapter 9
Positive: That voice...
Neutral: “For revenge!”

Nanami Route

Chapter 1
Positive: “Is there nothing but Cola[...]”

NO → YES → NO → YES → YES

As you progress, a Nanami-related intermission will appear during the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.

The game will branch into the route in chapter six.

Yua Route

Chapter 1
Neutral: I felt bad[...] (ch01_005_登校)

NO → NO → YES → YES → YES

As you progress, a handful of Yua-related intermissions will be interspersed throughout the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.

The game will branch into the route in chapter seven.

Ayase Route

Chapter 2
Negative: ...looked at me.
YES → NO → YES → YES → YES

As you progress, a handful of Aуase-related intermissions will be interspersed throughout the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.

The game will branch into the route in chapter seven.

Kozue Route

Chapter 3
Positive: And sure enough[...]

YES → YES → YES → YES → NO

As you progress, a handful of Kоzue-related intermissions will be interspersed throughout the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.

The game will branch into the route in chapter seven.

Sena Route

Chapter 3
Neutral: She'd actually swung[...]
YES → YES → YES → YES → NO

As you progress, a Sena-related intermission will appear during the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.

The game will branch into the route in chapter seven.

Rimi Route

Chapter 1
Positive: I felt bad[...]
YES → NO → YES → NO → YES

As you progress, a handful of Rimi-related intermissions will be interspersed throughout the story. The skip mode will disengage during these scenes. Be sure to read them for additional context.

The game will branch into the route in chapter eight.

Blue Sky

Accessible from the title menu after all other routes.
After playing for a bit, you will be met with a series of choices. It is recommended to try and solve it yourself first, but the answers are below should you need them.

Ending AA: YES → YES → NO → NO → NO → YES → YES → YES → YES → YES → YES → YES → YES → YES → YES
Any deviation from above will result in Ending A.

Prelude

Accessible from the title menu after Blue Sky.

Remaining Achievements and Cleanup

The final achievements are tied to viewing all delusions, TIPS, CGs, as well as two specific results from the medical questionaire you fill out in Chapter 2.

Simply view all delusions—positive, negative, and neutral. This should help you get most of the CGs and TIPS as well. However, there are a couple CG variants that result from how you answered Grimm's questions in Chapter 1. Depending on your choices, Hazuki can wear glasses or not wear glasses.

For the questionnaire, you need to submit it twice—once with all boxes checked, and once with no boxes checked.

Thanks and Notes

Unauthorized rehosting of this guide is not condoned. Please do not rehost and/or modify this guide to host in other spaces without permission. Contact [e-mail] to request permission.

Found an issue with this guide? Have feedback? Feel free to comment below or email us; we'll address it!

[RyoutaSuzumura]

Thank you for the guide!!! <3 got 100% achievement

[Pencillus Sedatus]

phew, finally finished. this game is insane.

[Arcane Azmadi]

What was the Sena-related intermission and where did it happen? My text skip isn't disengaging when it hits unread text, even though I've checked that it's set to do so (am I pressing the wrong button?), so I got to Sena's route branch without seeing any new scene while skipping.

[Argon]

Thank you

[Cosmo]

It's better to go for the Crying Sky (Ending B) AFTER having done the other routes because it makes a few references to events that happen in those routes which only make sense if you've already done the other routes.

[ГОВНОЧИСТ]

Love you guys!
Спасибо!

[Bronadian]

Any chance of reuploading the guide for the unpatched version?

[EldritchPickle]

For anyone else having trouble finding tip 101: you just need to answer "no" twice in the question segment during the conversation with Grimm about swimsuits, just after the prologue.

[Inuzumi]

Thank you for the help.

[xHans]

Just going to add detail that for Ria-Ju achievement in Chapter 2 do not select any check boxes unless you are a chronic masturbator irl then check that option then go to your menu and view your diagnostics tips.