Here is the full list of all 24 The Chronicles of Nyanya achievements.
Complete the game with low Friendship level.
Raise a Toxic Roll.
Kill all creatures in the Marshland of Eternal Wetness.
Win the Great Battle.
Complete the game with high Friendship level.
Complete all the important tasks while scouting.
Raise a Rollicorn.
Give the bad news about the meowbarian twin.
Complete all the basement trials with excellent results.
Purchase all the shoes available in the game.
Convert the leader of Meowdur’s Gate bandits.
Don't kill anyone you don't need to kill.
Defeat the Cat o’ Nine Tails.
Put a group of drowncats to sleep.
Prepare an ideal coffee.
Save a roll with icing in the Marshland of Eternal Wetness.
Find the Queen of Triis.
Have your party titled The Rolls of Splendor.
Leave the Underslipper with the Fury of Catsiris.
Gather all discount coupons in Meowdur’s Gate Orderbox District.
See the Great Bowl of Goodness.
Cheat Catar Spotted-Silvershield.
Tell Francat the truth about Prior's favorite dessert.
Receive the Medal of the Good Kitty.