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