Full stat team
You can make any team have full stats by editing each players stats and upgrading them to 99. However, if you start with that team in Manager mode, your salary will be high. Make sure to cut their contracts down as soon as possible.
Fully fit team in Manager mode
In Manager mode, notice that the energy bars of your players decrease after each match. Save your career, then go back to the main menu. Load your career again. Your team will have full energy again. Note: This may not work the first time. Save and reload the game maybe once or twice more for it to work.
Legendary Difficulty Level
Complete all the FIFA Challenges in 2 different zones.
Points
Successfully complete one of the following tasks to get the indicated amount of points:
500 points: Successfully complete the Underdog challenge
500 points: Successfully complete the Hat Trick challenge
500 points: Win the LDV Vans Trophy
500 points: Win the Football League 1
500 points: Win the Football League 2
500 points: Win the Scottish Cup
750 points: Successfully complete the 5 minute challenge
750 points: Win the League Cup
750 points: Win the Football League Championship
750 points: Win the Scottish Premier League
1,000 points: Win the English Cup
1,500 points: Win the F.A. Premier League
Start as five star team in Career mode
Unlock career teams in the My Fifa menu. You can do this by completing the challenges set.
Win everything in Manager mode with any team
Pick a team, then start your career. Save your game. Choose "Next Match", then "Quick Sim". If you win the match, save your progress. If you lose a match, return to the main menu and load your career again. You can have as many chances as you want against a team, as the outcome is random every time. Make sure to save your progress after every win, in case you lose unexpectedly.