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