Complete the following achievements to unlock Microsoft Gamerscore points. 

Achievement                     How to Unlock
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Consistency (10 points)  - Earn 3 special tiles in one game.
Nimble (10 points)       - Achieve a Speed Bonus chain of 30.
Milestone (10 points)    - Complete the Foundation pack.
Back-to-Back (10 points) - Achieve a 2-pair Multi-Match chain in Origins mode.