Witcher 3 (The Witcher 3: Wild Hunt)

All life

If not leaving the screen, then not for long)

But you will lose consciousness before you pass. ._.

strange question) you can go through in different ways, someone looks at each papyrus and watches cut-scenes, and someone skips everything, and so on point by point)

It depends on how much you are immersed in the game, in its history and in its gameplay.
It can take about 100+ hours, personally it took me 142 hours.

if the plot, then 4 days should be passed approximately, and if the additions are somewhere in a month or a month and a half

Is it 8 hours a day with a 5/2 lunch break?)

Hours 150

infinity

For a long time