Here is the full list of all 29 Eternal Hope achievements.
Meet the Charon.
Be saved by the hedgehog.
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.
Meet the trickster.
Come face-to-face with a troll.
Collect a pure soul.
Collect a weak soul.
Collect a coward soul.
Collect a heroic soul.
Save the hedgehog.
Enter the Dark Forest.
Meet the ancient turtle.
Collect a brave soul.
Collect an adventurous soul.
Collect your first soul.
Collect the first soul fragment.
Meet your first An'mu.
Befriend Heli.
Meet Heli.
Meet the girl in the cliff.
Start a new game.