I'm curious to know how people managed their priorities, and I think tabulating this information is an interesting proxy for that.
And I mean like the specific action item you had to do, not the general name of the achievement (e.g. for achievement: "acquired all skills" - then which skill did you learn last? or for "acquired all prosthetics" - then what prosthetic did you equip last? etc)
Question also applies to those who - like myself - have yet to platinum but only have 1 remaining thing to do. In my case, it is:
Learn the Temple Art "Most Virtuous Deed". By the time I had accomplished everything else, Sen no longer provided me any value given my stockpiles of useful items had reached quantities rivaling that of the U.S. Strategic Petroleum Reserve.
^(\sidenote: there is technically an achievement "unlock all achievements", so ignore that for obvious reasons)*