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