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.
Korben, is that you?
Fly away!
Collect every cat in the game.
Find the secret level.
Collect all postcards pieces in the game.
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.
Visit every wild west location.
Found him!
Forge the sword.
Visit every German location.
Visit every Greek location.
Visit every ancient Egypt location.
Catch some fish.
Everyone needs some help.
Collect all cats on one level.
Solve level without any hints.
Wow, that was quick!
Do nothing and enjoy the moment.
Destroy everything!
I knew it!