I just had my guy become a master Salad Packager, at the age of only 58.
Not impressed, you say? You say you've beaten that with practically every generation you've had? Well, fair enough, but mine did it without upgrading his kitchen! Hah! Impressed yet? Not really?
Well, there's something else I should probably tell you:
Dislikes running! His wife beat him to master by about 6 years while having to stop career development for a rugrat, but he did what I just assumed was impossible.