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