Here is the full list of all 24 Lake of Voices achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Became true partners
Created a miracle
Found one’s pride
It almost could have been
Hearts were eased with someone special
Continued forward no matter the loss
That is all he ever says
Yet a way was found
The only path
The dead cannot be revived
Escaped the void and returned to light
Persevered through all the hurt
A fearful and reckless conclusion
Drowning in every drop
Spirits were lifted together
Protecting what matters until the end
Suffered in silence
The price one must pay
Stepped foot on the bridges of Sinnlos
Remained sheltered from the reach of Nixi