Originally Posted by A Medium Bear
I just unlocked the achievement! Can confirm that they don't all need to be done in one run.
FYI, I unlocked it on my 71st Gold (48 Story/23 Strangers).
Best of luck!
That's the real confirmation I wanted to hear. Thanks a lot. At least we can leave out the hardcore missions and especially the once that take 20+ minutes. 47
more golds to go oh damn!