Here is the full list of all 65 Waveform achievements.
The base game contains 60 achievements, and there is 1 DLC pack containing 5 achievements.
Engage all Pulsars in a level
Use Pulsars to collect all hidden Light Orbs in a level
Complete Eris
Get S-Rank on every level on Eris
Travel 50000 AU to the left in Eris's Deep Space Mode