I managed, I finally managed to get 'What a Long, Strange Trip it's Been'. I could have gotten it last year if 'School of Hard Knocks' wasn't so stupid. And yes, I am complaining because I'm not a PvP'er. I could manage only three of the four criteria myself last year, and again this year, and the one that kept getting away from me was capturing a flag in Eye of the Storm. Returning a flag in Warsong gulch is no problem, just stay in the flag room. Assaulting a base in Arathi Basin is no problem, just...well just play the battleground. And assaulting a tower in Alterac Valley was no trouble either because there are so many of them. You just need to keep trying. I got quite lucky, though, and managed to knock each criteria out in my first go of each battleground. Eye of the Storm, however, is so hard because not only do you have to get the only flag but you have to successfully capture it, too, and with everyone either trying to get the achievement, or trying to actually play the game, it makes for an impossible task for someone with next to no PvP experience.
This achievement doesn't just create a problem for people like me trying to get it, though, it's for PvP'ers, too. For a full week of the year they have to put up with little nublets like me running around and messing about with terrible damage, giving the other side kills and generally not playing the game. I feel so guilty when I go into battlegrounds, especially for an achievement, because I know that my presence alone is letting the side down, so I always do my absolute best and often get quite stressed out about it, but at least I don't leave as soon as I got the achievement. I stick it out and do my best to maintain my side's hold over bases and keep our flag in the flag room. At one point I managed to take down an Alliance flag carrier all by myself, but I think they must have been a pretty bad player for that to have happened, but at that point at least I knew I'd helped rather than just letting him go (though he'd have been killed by someone else even easier outside, I'm sure).
But yup, at last, I got the achievement. And now I feel a little empty because, unless a new mount or pet is added every year, none of the world events have anything to interest me with anymore, except the chance for some gold doing the questlines, but to be honest that's gold I could have gotten from dailies if I could be bothered with them anymore, but being exalted with everything means there's little to gain from them beside shiny coins.