Here is the full list of all 11 Run, Kitty! - there are A Furry Gay Visual Novel achievements.
Eat a tasty vegan cake
Without further ado!
Enjoy the big dog in every way
Finish the game with a normal ending
Finish the game with a normal ending... again
Finish the game with a good ending
Finish the game with a happy ending
Buy the game like a good boy
Pirate the game
Read all the bonus scenes
Watch the end credits till the end