Here is the full list of all 27 Spectra achievements worth 1,000 gamerscore. It takes around 6-8 hours to unlock all of the achievements on Xbox One.
You have collected 10 000 Pickups
You have completed all tracks on both difficulty settings
You have completed a track on Hardcore difficulity
You have completed track 09
You have completed track 05
You have completed track 03
You have completed track 02
You have completed track 10
You have completed track 08
You have completed track 07
You have completed track 06
You have completed a track without any collisions
You have unlocked all tracks
You have looked at your stats
You have completed track 04
You have completed track 01
You have lost 100 times
Cash in an Air bonus while maintaining a Score Multiplier of 10 or more
Get a final score of 9000 or more in a single track
Complete any track with 100 collisions or more
Cash in a score buffer of 3000 points or more
Get a combined best score of 100 000 or more across all tracks
Lose a score buffer of 3000 points or more
Get a score multiplier of 15 or more
Complete a track with 50 successful "Nice!" bonuses
Complete all Achievements
Collect 100 or more Pickups whilst maintaining a score buffer