There's a small "problem" with the achievements ranking : it is sorted according to the number of points (which is good), but the column named "Total" (=the number of completed achievements) appears first after the name. It's weird to see this first column as if it was sorted according to it while some players with a lower Total have a better rank than some others with a higher Total.
If the ranking is according to the number of points (which currently seems to be the case), the number of points should be in the first column after the name. Or if you put the Total column first, the sort should be done according to it, not the Points. Otherwise, it's weird.
Also, in a general way, in other rankings when there's no formula involved, the order of the columns indicates the order of priority in case of egality : in the crafting ranking for example, it's first the number of recipes learnt which matters, then (if egality), it's the number of craft points, then (if egality) it's the diversity points etc.
It's important to put the columns in the correct order so everyone can understand correctly how it works. And I hope the column called "First" is supposed to be placed last lol, cause that's already not really normal to take this into account in this ranking(*), so if it has a higher priority in the ranking than the number of achievements validated, that'd be even less normal.
(*)I mean : new players will necessarily be disadvantaged with this cause they can NOT be first to any achievements already validated by at least 1 player in their world (which is the case for almost all achievements when we join a world which is over one year old, except the extreme new ones -but for them, old players are also advantaged). There's only new achievements in events for which they can try to be first but new players will in all cases be disadvantaged about this, as well as about the old achievements non-achievable anymore which recently got hidden instead of giving us the chance to complete them. If you intended to put a ranking in game, you weren't supposed to hide these achievements lol but to try to allow players to validate them ...