Accomplish the indicated achievement to get the corresponding number of Gamerscore points:

Deus-Ex Socca (5 points): Defeat a CPU controlled team in single player or local multiplayer.
Over The Moon (5 points): Score 10 goals in any match type except local multiplayer over multiple matches.
Stay The Distance (15 points): Complete a single player preset league in 1st, 2nd or 3rd.
World Of Friends (10 points): Win an Xbox LIVE friendly match.
High Tension (15 points): Win a penalty shootout.
It Is Now (15 points): Score the winning goal with 90 minutes on the clock or 120 minutes if there is extra time.
Gentlemanly Conduct (20 points): Complete a single player preset league as the best team.
Possession (10 points): Play a match without any of your players receiving a card.
Goalscoring Superstar Hero (20 points): Achieve an end of match possession rating of 75% or higher.
Thrash'Em (25 points): Win by 5 or more goals in an Xbox LIVE ranked match.
Flying Header Hero (30 points): Defeat any team in single player by 10 goals or more.
Unknown (30 points): Score a goal using diving header.