I've been playing
Rock Band since the first one, pretty much every day at lunch, at work. I have one other guy who plays along. Other people have occasionally joined, but mainly it has just been the two of us. With the end of my job, the era of our lunchtime sessions has ended, so that friend came over a mi casa to wrap up a few unfinished things.
Finally finished the ironically apt "Big in Japan" achievement for
Rock Band 1; that makes all of them: All those tedious "played every concert at every venue" Achievement. I didn't hate them, but I am glad that they never made another appearance.
He knocked out some drum cheevos, on 1, 2, and 3.
We tried to get 3's "Face Melter" cheevo, but it turns out that no one considers Def Leppard's
Pyromania to be "metal" -

Apparently the exported AC/DC tracks will work.
I can't believe how many hours we have sunk into this game, and how much fun it still is.