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