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