plz help me with 'Drinking Martini'

[Bugasong]

plz tell me how to get Drinking Martini I have looked everywhere

[Dragomok]

Getting the other 9 puzzle achievements was easy but in a challenging way, but I'm completely stuck on Drinking Martini too.

Here's what I've figured out so far:

Martini seems to only appear in Butler's tray.

Butler only appears in Chapter 6 (The Manor) and Chapter 8 (Secrets). (The No Loose Ends story from the Novels chapter doesn't contain Butler.) The only 3 characters in the same stories as Butler are Duke, Duchess, and Detective. Max number of panels is 6.

Martini only appears on the tray in Ballroom, after Duke/Duchess reject wine and demand martini. When offered martini, they will demand beer. When offered beer, they will demand wine, starting the Booze Cycle again.

Booze Cycle persists across any combination of Duke or Duchess interactions. Putting panels without Butler offering a drink to Duke/Duchess does not affect Booze Cycle at all.

Booze Cycle does not seem to persist across stories.

Detective seems to always reject all 3 varieties of drinks, even when offered multiple times or after seeing a ghost. Furthermore, after commiting murder, Butler will have wine on his tray.

Butler does not seem to ever drink anything, even after mudering someone, murdering both royals, getting close call with Detective, seeing a ghost, or standing still with a delicious martini for 5 panels.

Butler becomes unavailable in the story after getting arrested.

Duke/Duchess will not drink anything after the murder of their spouse due to a broken heart, even when offered twice. Gettig spooked by their ghost doesn't make them drink either.

Putting Duke/Duchess in a Witness panel and forcing them to look at either Butler waiting with martini or their spouse rejecting drinks. Having Duke/Duchess witness murder of their spouse will only make them angry at Butler, and tray with drinks will disappear.

Duke won't drink after a 4-panel session of lovingly fingering his gun.

...

I don't think there's any possibility space left to explore. Either I'm missing something BIG, or this is actually hinging on some cut content.

[Dragomok]

As of writing this, 1.3% people have that achievement (making iot the rarest one), so...

...unless there's a very specific installation-related bug, it should be possible, but it's horribly obscure?

Dang. I thought we were onto something here.

[FreakofNature]

On chapter 8 have the duchess witness the butler holding the gun. Then have the duke switch the drink to a martini. Finally have the butler and the duchess in the ballroom and she will drink it in fear.

[Kawara GOTO]

Greetings i figured it out, this achievement is unlockable in the third part of the chapter 8

Here's a little clue if you don't want the solution

You can make this annoying duchess drink if she feel threatened

This is the solution

Put Butler and Duke in the Ballroom
Put Butler in the Gun room
Put Duchess in the Witness Room
Put Butler in the Ballroom
Put Butler in the Gun Room
Put Butler and Duchess in the Ballroom

Have fun, Bye.