Here is the full list of all 36 Crystal Call achievements.
Collect every collectable
Complete Level 16
Complete Level 16 without dying or restarting
Complete Level 15
Complete Level 15 without dying or restarting
Complete Level 14
Complete Level 14 without dying or restarting
Complete Level 13
Complete Level 13 without dying or restarting
Complete Level 12
Complete Level 12 without dying or restarting
Complete Level 11
Complete Level 11 without dying or restarting
Complete Level 10
Complete Level 10 without dying or restarting
Complete Level 9
Complete Level 9 without dying or restarting
Complete Level 8
Complete Level 8 without dying or restarting
Complete Level 7 without dying or restarting
Complete Level 7
Complete Level 6
Complete Level 6 without dying or restarting
Collect a collectable
Complete Level 5
Complete Level 5 without dying or restarting
Complete Level 4
Complete Level 4 without dying or restarting
Complete Level 3
Complete Level 3 without dying or restarting
Stay airborne for 5 seconds
Complete Level 2
Complete Level 2 without dying or restarting
Complete Level 1 without dying or restarting
Complete Level 1
Die for the first time