Here is the full list of all 29 Eternal Hope achievements.
Meet the Charon.
Meet the trickster.
Befriend Heli.
Be saved by the hedgehog.
Collect a pure soul.
Save your girlfriend from the Shadow World.
Destroy Heliel's heart.
Enter the Temple of Souls
See Heli's true form.
Meet your first Umbra.
Enter the Forgotten City.
Collect a corrupted soul.
Collect a condemned soul.
Collect a legendary soul.
Come face-to-face with a troll.
Collect a weak soul.
Collect a coward soul.
Save the hedgehog.
Collect a heroic soul.
Meet the ancient turtle.
Enter the Dark Forest.
Collect a brave soul.
Collect an adventurous soul.
Collect your first soul.
Collect the first soul fragment.
Meet your first An'mu.
Meet Heli.
Meet the girl in the cliff.
Start a new game.