Complete the indicated task to unlock the achievement.

Achievement	How to unlock
?	How about Global Thermonuclear War?
10 Down	Finish 10 Online Games
AI-10	Beat 10 Levels of AI
AI-25	Beat 25 Levels of AI
Arpad Elo	Get a non-provisional Elo Rating (play 15 rated online games).
Centurian	Finish 100 Online Games
Dark Horse	Are you ready for the perfect storm? Beat someone ranked 20 points above you (in a rated game when both of you exist on the leaderboard).
I'm 100	Win 100 Games
Welcome to The Arena	Win first Online Game
White Always Mates	Eternal, unvarying triumph?