It isn't very clear on how you get these achievements and I am really confused...

help?

They are retired, so you can't get them anymore.

They have been replaced with the achievement system instead :)

:edited for typos:

well that SUCKS. I never even knew about them and I have had my account for YEARS... ughhh

It was all over the news page and the forums when it was announced. I'm sorry if you didn't realise before now :(

ah it's okay.