Here is the full list of all 17 Heart & Soul achievements.
Bad Ending Version 1 Obtained
Bad Ending Version 2 Obtained
Bad Ending Version 3 Obtained
Bad Ending Version 4 Obtained
Bad Ending Version 5 Obtained
Bad Ending Version 6 Obtained
Bad Ending Version 7 Obtained
True Ending Obtained
Good Ending Version 1 Obtained
Good Ending Version 2 Obtained
Neutral Ending Version 1 Obtained
Neutral Ending Version 2 Obtained
Pass all of Aphrodite's Trials
Obtained a ending other than the true ending
Have Psyche join the Olympiads as the Goddess of the Soul
Extract Revenge on Amara and Sirena
Forgive Amara and Sirena for turning Psyche against Eros