Here is the full list of all 11 Sphoxie achievements.
Beat all Azure levels
Beat Sphoxie
Beat Sphoxie 100%
3 Star all none race levels
Best time in all race levels
Fall 333 times
Beat all Mauve levels
Beat all Coral levels
Beat all Bosses without falling
Get at least 1 star on none race levels
Get at least 1 star on race levels