Trophy Time Achievement in FIFA 12
Win the league title in any league in Career Mode
How to unlock Trophy Time
Start up a new career with whatever club you wish. If you're new to FIFA, you might want to pick one of the best teams of an average league so you can take anything. To unlock this achievement, you must win the league in which you are playing. If you play with Man United, you must win the Premier League, for example. Difficulty does not matter, it can be done on Amateur.
If you want it real quick, pick one of the top teams and simply sim the entire season.