Here is the full list of all 21 Equinoxe achievements.
Save the world of equinoxe
Solve every puzzle in Equinoxe
Solve puzzle 09
Solve puzzle 08
Find the hidden mural
Find and use every contemplation points
Find and use contemplation point 03
Find and use contemplation point 02
Solve puzzle 07
Solve puzzle 06
Solve puzzle 05
Leave it here already !
Make a complete turn to the stone
Casually splash in the pond
Solve puzzle 04
Solve puzzle 03
Solve puzzle 02
Find and use contemplation point 01
Take your time to enjoy the peacefull world of Equinoxe
Solve puzzle 01
Make a tribute to the makers of the game and watch the credits