Here is the full list of all 80 Rhythm Zone achievements.
Achieve Level 25
Add 25 songs
100% 3 songs on any difficulty
Fail a song on Hard after completing 95% of it
Complete 10 songs on Medium
Earn a 250 Note Streak
Earn 2000 Multipliers
Play 5000 Chords(2 -3 notes at once)
Complete 10 songs on Expert
Add 10 of your songs to the game
Play a song on Medium at 100% Accuracy
Play a song on easy at 100% Accuracy
Earn 500 Multipliers
Finish a featured song
Achieve Level 10
Complete 10 songs on Hard
Score 100 million points in total
Play 1000 chords (2 - 3 notes at once)
Play and finish a song on either Hard or Expert with your keys set to W,A,S,D
Failed a song within first 25 seconds
Earn 100 Multipliers
Score 10 million points in total
Earn a 50 Note Streak in a game
Score 1 Million Points in Total
Earn a 20 Note Streak in a game
Achieve Level 1
Add a Song to your library
Deploy Focus Power while track is flashing red and save yourself, 100 times
Deploy Focus Power 250 times
Deploy Focus Power 500 times
Deploy Focus Power 1000 times
Earn a 500 Note Streak
Earn a 1000 Note Streak
Earn a 2000 Note Streak
Fail a song on easy after completing 95% of it
Fail a song on medium after completing 95% of it
Play a song on Hard at 100% Accuracy
Play a song on Expert at 100% Accuracy
Finish 10 featured songs
Finish 30 featured songs
Finish 50 featured songs
Add 50 Songs
Add 100 of your songs to the game
Add 500 songs
Add 1000 of your songs to the game
Add 5000 songs
Add 10,000 Songs
Fail a song on Expert after completing 95% of it
Complete 100 songs on Easy
Complete 100 songs on Medium
Complete 100 songs on Hard
Complete 100 songs on Expert
Achieve Level 50
Achieve Level 100
Achieve Level 250
Deploy Focus Power while track is flashing Red and save yourself, 250 times
100% 10 songs on any difficulty
100% 25 songs on any difficulty
100% 50 songs on any difficulty
100% 100 songs on any difficulty
Play 10000 Chords(2-3 notes at once)
100% a Featured song on Easy
100% a Featured song on Medium
100% a Featured song on Hard
100% a Featured song on Expert
Play a song on Expert, and achieve at least 95% accuracy while having a streak of 250 and using Focus Control at least once
Complete 10 songs on Easy
Accept and win your first Challenge
Send your first Challenge
100% a Friends Challenge that was sent to you
At least double your friends’ Score on a Challenge they Sent
Accept and Complete 10 Challenges
Accept and Complete 25 Challenges
Accept and Complete 50 Challenges
Accept and Complete 100 Challenges
Accept and Complete 500 Challenges
Win an accepted Challenge with any song set on Easy Difficulty
Win an accepted Challenge with any song set on medium Difficulty
Win an accepted Challenge on any song set on Hard Difficulty
Win an accepted Challenge on any song set on Expert Difficulty