So for the categories Level 10 - 20 and so on do i have to beat level 10 too or is from level 11 to level 20? Just a bit confused since some levels would be in more categories

Any% Level 10 - Beat the first 10 levels as fast as possible.

Any% Level 10 - 20 - Beat levels from 10 - 20 as fast as possible

And so on. Hope I helped.

NOTE: Any% Level 10-20 and 20-28 don't include LVL 10, 20 and so on (should I rename the categories?).