Ok...I'll preface this by saying I'm not proud*... but I did use my 3 year old daughter, K, to get an achievement on an XBLA game.
SO of course it makes sense that two of the achievements are Play for 10 Hours and 40,000 Fish in the Fish Bank. After years of K playing this game fairly regularly, we finally finally hit the 10 hour mark. I could not believe it. That is how exciting this game is: after just an hour you feel like you probably deserve the 10 hour achievement, but you won't get it...you won't get it until 2 years later. And on top of that - our fish bank only has 21,000 or so fish in it. So you're telling me this game wants another 10 hours of my life!? For 10 gamerscore!? This is just too much to bear.
I'd like to know how developers decide the requirements for their achievements, and the amount of GS you are awarded for getting it. I really don't think a game that cost me 400 Microsoft Points and is pretty boring should ask for 20 hours of my life to 100%. And yes, I really am complaining about this because I want to be a completionist and finish this thing. Good thing I have K around to help me through the time grind. And when she's bored with it, the 1 year old should be about ready to log in her hours. :-D
*Note: I actually am kind of proud.