Here is the full list of all 19 AudioSurf achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
Fill all columns within 15 seconds. No greys. No matches.
Finish Clean, Gold before finish, hit last block, elite only.
Score 17000 points in a single match.
Dethrone a friend from a global scoreboard.
Beat a friend's score less than 15 min. after they earn it.
Collect a match of 24 blocks.
Collect a chain reaction of 7 white blocks.
Turn 21 blocks red with a single paint.
Make a candy stripe.
30000 points per minute. 3 minute minimum.
Collect matches in 4 colors simultaneously.
Earn triple a gold medal requirement. 2 min minimum.
Earn Clean Finish and Gold 3 times in a row.
10000 points per minute. 3 minute minimum.
Using Ninja Mono, earn Stealth. 11 min minimum.
Using Ninja Mono, earn Stealth. 7 min minimum.
Using Ninja Mono, earn Stealth. 3 min minimum.
Stealth and collect every color block. 3 min minimum.
Earn Gold without overfilling. 2 min minimum.