Hmm, achievements, I guess that things that qualify are quite individual, but for me, these are my "milestones" in 2009......
1) Getting my PADI in Egypt and doing some 18mtr dives in the Red sea (something I've always wanted to do).
2) Completing my first half marathon.
3) Beating my half marathon PB by 5 mins on my second half marathon
4) Going sub 60mins on not once, but twice, in 10k races (59mins and 58mins)
And loads of other smaller (for me) achievements throughout the year