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