This achievement is simple, after you understand what you actually needed to do.
The way to achieve this is simple. You can modify settings one by one, or in one go. Just make sure you go trough all of these

Be warned. You might not get this achievement as for some people it's bugged. As far as i know, developers know about the issue, and will fix it ASAP. If you don't get the achievement after going trough all of the steps, then wait for an update to the game and try again.

1. Go to settings in the game.
and from here it goes like this

2. Every setting you see that can be changed, whether it is a slider, or one of these -
or one of the checkboxes.
you have to

3. For sliders - turn them to lowest value, then with arrow keys go to the max value said slider has.
4. For checkboxes - just check and uncheck the box.
4.1 WARNING - When checking boxes, an extra slider and a options field will appear. You have to go trough those as well. AKA be thorough.
5. For these types ( ) - scroll trough every possible value they have.

6. When you check this box -
you should get the achievement - Settings world champion, if you went trough everything correctly.

Congratulations. You got the achievement. Hopefully this helped.

1.

2.

use arrow keys for sliders. Click trough arrowed options with mouse or use arrow keys to cycle trough it. You don't have to "Apply Resolution" for the video settings for it to work =============>


With the last image box checked, you should receive the achievement. Hope this helps.