Here is the full list of all 24 Cats in Time achievements. It takes around 4-5 hours to unlock all of the achievements on Windows.
Fly away!
Collect every cat in the game.
Collect all postcards pieces in the game.
Korben, is that you?
Visit every underwater location.
Visit (almost) every location in the game.
Visit every period in the game.
Visit every Tokyo location.
Visit every New York location.
Found him!
Visit every wild west location.
Forge the sword.
Visit every German location.
Visit every Greek location.
Find the secret level.
Everyone needs some help.
Visit every ancient Egypt location.
Solve level without any hints.
Wow, that was quick!
Catch some fish.
I knew it!
Do nothing and enjoy the moment.
Collect all cats on one level.
Destroy everything!