The ranks say "complete most of the challenges in this rank to unlock the next rank" To get from rank 1 (apprentice) to rank 2 (journeyman) I got 5 achievements in the first rank...I have gotten 6 achievements (including adeptbuilder and homeowner) in the journeyman rank so I should unlock the next rank...right? It may be hard to see from this picture exactly which ones i got so here's a list: I got shroompicker, monsterslayer, expertfarmer, lumberjack, adeptbuilder, homeowner and i have NOT gotten fisherman and cookielover
The configuration is set to a leeway of 1 challenge per rank. This is supposed to mean that you need to complete all but 1 challenge in a given rank to unlock the next rank. It's strange that you only needed 5 challenges to unlock Journeyman instead of 7. I have not changed this config value.