I never used to, but then I got a 360 and achievements. I like 'beating' games, then I like annihilating games. If a game really takes my fancy I do it the honor of trying to beat it to as strong a degree as possible. This includes level caps, completion %, difficulties, and in the case of 360 games, achievements. ME has been the first to attract me so, so I spent weeks 1000/1000-ing it, including beating it on Insanity (although to be fair, new game plus makes it cake), ME2 will be done soon, but it'll take time. Rearmed is far too hard, but I'd like to get there eventually (Got to like the 20th challenge room. God those things... take like >50 attempts...) Shadow Complex is one I'd like to have defeated too. Bionic Commando 2008 would be nice to have 100%'d, but the game was poorly designed in that respect - I might have to buy a guide for it ( might also just use GameFaqs)