How did I get the "Unachievable" achievement? [duplicate]

I've just played through Stanley Parable for a few hours and have got all of the different endings (including all variations of the easter eggs), besides the "disco" one.

After quitting the game, I noticed that I got the "Unachievable" achievement. Looking at the time, I think that I got it around the time I got the "broken narrative" ending, but I'm not entirely sure.

I've looked up how to get the achievement and most guides involve adding key bindings and doing it through there - I definitely haven't done that. The only things I've done in the console are sv_cheats 1 and bark.

I am not looking for how to get the achievement, my question is that I have got the achievement and don't know how I did!

Solution 1:

You can read this post and it will explain some back story behind it. It looks like only 1 out of 15 people unlock it without doing keybinding if they meet the criteria.

Since you mentioned that you did not do the keybindings, you must have been part of the minority who unlock it by luck!