Here is the full list of all 12 Yuki Onna achievements.
Die many times in one play-through
Get killed by the crocodile
Get killed by the goat
Buy every time from the gachapon machine
Eat a bowl of ramen
Do Shoji a favor
Kill Yuki Onna
Escape with the kids
Collect every item in the game
Drop every item in the game
Read from all of the ice fragments
Escape without getting hit by Yuki Onna