Full list of all 15 Meow Moments: Celebrating Together achievements. It takes around 1-2 hours to unlock all of the achievements on Windows.
Completed New Year scene
Found 100 diverse characters in New Year scene
Found the 101 cats in New Year scene
Found Taty's cat in New Year scene
Found Oliver the cat in New Year scene
Found Whiskers the cat in New Year scene
Found Buddy the cat in New Year scene
Found Cherish Cat in New Year scene
Found an unlucky cat in New Year scene
Popped all balloons in New Year scene
Found guitar player cat in New Year scene
Found Pandora the cat in New Year scene
Found the dogwalker cat in New Year scene
Completed 1 scene from the Community
Found an islander cat in New Year scene