During the World Cup, the player that has scored the most goals at the end of the tournament wins the so called "Golden Shoe".
I don't really understand why this achievement says the standing record is 10 goals, since Just Fontaine (France) scored 13 goals in 1958, but ok.
This one is a bit tricky, since you never know how good your opponent is.
Select "Online Fifaworldcup" in the Main Menu, select a 5-star team with good strikers/midfielders and score at least 10 goals in all matches (7 in total including the final) with one player.
If you're lucky and you get weak teams to play against during the group stage you can chalk this one off before the knockout stage.
Some teams with good forwards are:
England - Wayne Rooney / Emile Heskey / Gabriel Agbonlahor
France - Karim Benzema / Nicolas Anelka / Thierry Henry / Franck Ribery
Italy - Vincenzo Iaquinta / Filipo Inzaghi / Andrea Pirlo
Spain - Fernando Torres / David Villa / Xavi / Iniesta / Cesc Fabregas