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