I just compiled a list of my craziest S-rank which made me question my sanity: (http://www.giantbomb.com/profile/wakapeil/my-craziest-s-ranks/46-67401/)
What is your craziest S-ranks and why? Is it you most difficult, most time consuming or just weird?
My one is definitely Civilization V. Just checked Steam and it tells me I have been playing it for 200 hours. It has some of the most difficult and repetitive achievments I've earned. Oh and there's 176 of them.