30 Days of Night
Tries hard, but fails on many, many levels. Try harder.
I have been replaying Warhawk over the last few days to try to obtain a few of the trophies introduced into the game, and boy are they hard and obscure! I've actually surprised myself by the number that I've managed to get, but even still I think I only stand at around 8%.
I spoke to someone on a forum the other day who said that he has played the game now for close to 200 hours (yes - 200!) and even then thinks he'd some distance from meeting all the requirements to get 100%! (200 hours!!!!!!!)