Here is the full list of all 37 Airtone achievements.
Get an SS+ rating in 1 song in BASIC
Get an SS+ rating in 1 song in MEDIUM
Get an SS+ rating in 1 song in HARD
Get an SS+ rating in 5 songs in BASIC
Get an SS+ rating in 5 songs in MEDIUM
Get an SS+ rating in 5 songs in HARD
Get an SS+ rating in 10 songs in BASIC
Get an SS+ rating in 10 songs in MEDIUM
Get an SS+ rating in 10 songs in HARD
Get a B+ rating in 25 songs in BASIC
Get a B+ rating in 25 songs in MEDIUM
Get a B+ rating in 25 songs in HARD
Get a + rating in 25 songs across all levels
Clear your first FULL COMBO
Clear your first PERFECT
Get a FULL COMBO in 25 songs in BASIC
Get a FULL COMBO in 25 songs in MEDIUM
Get a FULL COMBO in 25 songs in HARD
Get a PERFECT in 25 songs in BASIC
Get a PERFECT in 25 songs in MEDIUM
Get a PERFECT in 25 songs in HARD
Get a B+ rating in over 10 plays
Get a B+ rating in over 100 plays
Get a B+ rating in over 300 plays
Get a B+ rating in over 1,000 plays
Talk with NEON for the first time
Get your first item
Draw graffiti with the item toy pen
Decorate with the item toy wallpaper ball
Take a photo of NEON with the item toy camera
Get 1,000,000 Rhythm Points
Complete Phase 1
Complete Phase 2
Complete Phase 3
Complete Phase 4
Complete Phase 5
Play end credits.