Here is the full list of all 13 Of Frost and Flowers achievements.
Get Lithiel’s ending, and possibly get ownership to his entire forest…?
Be a victim of Lithiel's mischief.
Met Terevska and Frosty.
Get Sol's good ending.
Bargained with Keshir and bought Sol a gift.
Met the definitely not suspicious Isaiah.
Get Kisha's bad ending.
Get Sol’s bad ending.
Have Sol rescue you from execution.
Get Kisha's good ending.
Ate Lithiel’s signature silverbloom soup.
Read all books in Al’ Sharan’s library at one sitting.
Have Kisha rescue you from execution.