I'm not sure how serious I am about achievements. I have no intention of getting them all done but it's fun chasing them. Sure I've gone out of my way to get a few of them done but a lot of them just comes from normal playing and raiding.
It feels like a bit of a milestone to pass 6000 points anyway which I did tonight. I've largely left the PvP ones be.
Here I got [The Czar of Sporeggar] combined with [25 Exalted Reputations]. It was really quick and easy going from about 1000/21000 to exalted as a lvl 80 moonkin. Poor nagas, one moonfire and insect swarm per mob. I celebrated by getting the [Tiny Sporebat] and the [Sporeggar Tabard]!
I got my first 10 man Hard mode done tonight for [Glory of the Ulduar Raider] namely Thorims [Lose your Illusion]. Since we haven't got enough people online for full 25 man clears we're organizing to get the 310% speed mount from Ulduar for as many as possible. Most people in the guild have the Naxx 10 man mount but the Ulduar one is nice looking and it provides a challenge and a goal.
The last one is a bit of a reputation and title spam as I got 3 titles in one go.
Ambassador, Crusader and 'of the Exodar' by doing the Draenei starting zone quests.
I've also tried Mimirons [Firefighter] and it's pretty tough. We spent 1 hour trying it last night and 2 hours tonight and we've made it to 3 sub 15% attempts in P4. It feels very doable but just needs to click.