This game is a very good game IMO however i completed the story mode 6hours after which i bought the game, it would be rediculous to play the game for 100 days after i have already done everything. So certain people that have done everything else there is to do in this game or if you have rented the title, may want to do the glitches for the 7days 3months and 100days achievements. If maybe there was more content within the game then 100 days wouldnt be a problem but the level of which the computer AI are the game will never take more then 10 hours for me to complete even on Authentic.
100 % Retail - 36
100 % Arcade - 12