If stats were ranked so that you could see how you compared to other players with it (for example #5032 in deaths from sea monsters) which stat do you think would be closest to #1?
For me it would probably be either rivals defeated,
so first, you have to travel to the old sea, which is pretty annoying to do
then you have to make your way over to the deep sea
and then you just have to get lucky
I just realized files before the change of quest being completed only once are the only files who can have more files than all the current quests that exist and will exist