Here is the full list of all 18 FRACT OSC achievements.
Commited to a wave
A crystal den
All the choir is here
A forgotten dig site
A brave basin drop
Fly behind the mountain
A high mountain vault
A crystal crevasse
Fly over the dig
A telling dead end
Remember my song
Power User
More choices ahead
A vital dam plunge
Fly through the wreckage
A dome from the past
A potent kit indeed
Modulation memory