Then there is the obvious "improve your score compared to the score that you had".
But other than that?
I am stimulated by analyzing the game, producing FAQ, guides, statistics, tournaments to define who is able to excel in a certain category in a certain time period.
Anyway my ultimate objective in game is to have a tactic so foolproof, compared to the active playerbase, that my streaks would be very long and frequent, to the point that it gets boring. About this ritter, wozza, tct and nullpointer got close to my idea with average streaks of 50+ for the top3 streaks (1). My objective would be like having a minimum streak length of 50.
Therefore playing for almost complete dominance as side effect improves the score and in turn push higher the stats in all the unavoidable tournaments.