If you're like many of us, you've probably looked at the Achievement system coming to the game in patch 3.02, picked a few favorites, and considered getting some of them done before Wrath hits and all hell breaks loose. The last few weeks before an expansion tend to be relatively relaxed and quiet, leaving you with plenty of time to, say, Explore Kalimdor, visit zones you may have missed for 1500 Quests, or just convince more factions that you're really not so bad.
Some Achievements, however, are a little tougher, particularly those that will reward your character with a special title or mount. While I'm not sure I want to think about what something like For the Alliance! is going to be like, the one that I'm most concerned about is the Fishing Diplomat one. It's an an achievement needed for Accomplished Angler, and requires you to fish something up in both Orgrimmar and Stormwind. My main is a Tauren Druid, so fishing anything in Orgrimmar is a piece of cake. Stormwind, less so. While I can stealth into the city easily enough, fishing necessarily leaves you exposed for a period of 15-20 seconds. I don't think it'd bother me as much as it does if it weren't for the team of bored Alliance on my realm who typically camp quest objectives during holiday events. While I somehow doubt they've got the numbers or inclination to cover every inch of the Stormwind canals, I'm equally doubtful that my eight-foot cow's presence in the city will go unnoticed.
I don't really have that much to worry about compared to the Hordies going after Old Ironjaw (in Ironforge) or Alliance going after Old Crafty (in Orgrimmar) for the Old Ironjaw and Old Crafty achievements respectively (what sadist came up with the idea of having you fish for a 0.1% drop in an enemy city?), but one thing's certain: some achievements are going to be more taxing than others.