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