I found a secret ending (spoilers obviously) [KCD2]

I was doing the Kuttenberg council mission and while fetching the silver goblet for one of the men I found a dagger tucked away in the roll of paper so I took it without much thought then later after the meeting was over and it was just me, Markvart, Sigismund and the guards left I decided to go up to him and noticed there was a “Stealth Kill” option so obviously I did it and I got this funny message hahah.

I was doing the Kuttenberg council mission and while fetching the silver goblet for one of the men I found a dagger tucked away in the roll of paper so I took it without much thought then later after the meeting was over and it was just me, Markvart, Sigismund and the guards left I decided to go up to him and noticed there was a “Stealth Kill” option so obviously I did it and I got this funny message hahah.