XP, Levels and Medals
    
   XP & Levels
With every game you play, win or lose, you will be rewarded with XP (eXperience Points). Winning will give you more points than losing, but by playing you always gather points. When you reach a certain number of points, your level will go up.  There is an XP bar displayed  in your pop up stats screen, which appears when clicking on someone's name, so you can monitor your progress. After every game the results screen will tell you the amount of XP you will receive.

Note: You have to complete at least 80% of the game to earn XP.