Complete the indicated task to unlock the corresponding achievement. To
view your achievements and stats in Steam, select "Community", then "My 
profile", then "View all my games", then the game and view stats. 

Unlockable         How to Unlock
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Royal Ride       - Earn Gold without overfilling. (2 minute minimum)
Stainless        - Earn Clean Finish and Gold 3 times in a row
PPM 10,000       - 10,000 Points per minute. (3 minute minimum)
Stealth Agent    - Using Ninja Mono, earn Stealth. (3 minute minimum)
Stealth Master   - Using Ninja Mono, earn Stealth. (7 minute minimum)
Stealth Legend   - Using Ninja Mono, earn Stealth. (11 minute minimum)
PPM 30,000       - 30,000 Points per minute. (3 minute minimum)
Laser Show       - Collect matches in 4 colors simultaneously
Snowstorm        - Collect a chain reaction of 7 white blocks
Big Kahuna       - Score 17000 points in a single match
Spotlight Finish - Finish Clean, Gold before finish, hit last block.
Ninjutsu         - Stealth and collect every color block (3 minute minimum).
Olympian         - Earn triple a gold medal requirement (2 minute minimum).
Ambush           - Beat a friend's score less than 15 minutes after they earn it.
Bauer            - Collect a match of 24 blocks.
Bizarro          - Fill all columns within 15 seconds. No greys. No matches.
Brutus           - Dethrone a friend from a global scoreboard.