Wow. MMO Champion, long trusted to datamine anything that's not nailed down to the floor, brings us the complete (to date) list of Ulduar achievements added to the 3.1 PTR, and yeah. It's long. Blizzard promised us some new achievements for Ulduar, but I wasn't expecting a list THIS long. Or this hilarious.
There are the expected "kill these bosses" achievements, the inevitable "kill these bosses while doing something hard" achievements, silly achievements you'll get without trying, and more. Bear in mind that many of these numbers, and even some achievement criteria, are either incorrect or placeholders. Don't freak out.
The full list is after the jump and is, of course, quite spoiler-heavy, so stay away if you want your Ulduar experience to be as pure as driven snow.
The rest of you, though? CLICK. DO IT. COME ON.