Here is the full list of all 41 Cube Runner achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Finish all lvl-s.
Finish level 70
Finigh level 60.
Activate 10 checkpoints.
Finish 50 lvl-s.
Activate 5 checkpoints.
Finish level 40
Finish level 30
Use gravity switch 50 times.
Use direction switch 25 times.
Finish 25 lvl-s.
Use gravity switch 25 times.
Use switch 25 times.
Use gravity switch 20 times.
Finish level 20.
Use switch 20 times.
Use switch 15 times.
Die 25 times.
Use gravity switch 15 times.
Finish level 15.
Use direction switch 10 times.
Use switch 10 times.
Use switch 5 times.
Die 20 times.
Die 15 times.
Destroy 25 enemies that are blocking your path.
Finish level 10.
Use gravity switch 10 times.
Die 10 times.
Use gravity switch 5 times.
Destroy 20 enemies that are blocking your path.
Destroy 15 enemies that are blocking your path.
Destroy 10 enemies that are blocking your path.
Destroy 5 enemies that are blocking your path.
Die five times.
Die one time
Finish all 6 tutorial lvl-s.
Use switch first times.
Activate your first checkpoint.
Use gravity switch.
Destroy first enemy that is blocking your path.