As you play the game, you earn achievements that mark your accomplishments. The more you play, the more chances you'll have to earn achievements. Some of the ways to accomplish these achievements are answering a certain number of questions correctly, and suggesting, translating or rating questions. Please bear in your mind that achievements can be obtained only once. When you win an achievement, you'll see a pop-up that shows what you've unlocked and how many coins you have won as a prize.
You can see all of the achievements by going to the Menu and entering Achievements. There, you will not only see all the achievements you’ve unlocked but also how close you are to unlocking new ones.
You can also see other players’ achievements by accessing their profiles and checking out their performance.