Here is the full list of all 16 World Nations Game achievements.
Awarded after joining the game
Awarded after finishing your first work
Awarded after fighting for the first time in an international battlefield
Awarded for being in the top three in an ended international battlefield
Awarded after finishing your first school education
Awarded after finishing your first workout
Awarded after founding your first space colony
Awarded after upgrading to PRO with either gold or wallet
Awarded after winning your first race in races
Awarded after winning your first special agent fight
Awarded after winning 100 special agent fights
Awarded after winning 100 races
Awarded after winning 1000 races
Awarded after winning 1000 special agent fights
Awarded after winning 10 international battlefields (Top 3 in 10 battlefields)
Awarded for being in the top seven excluding the top three in an ended international battlefield