Here is the full list of all 21 Let the Cat in achievements.
Gained 250000 points!
Played 150 games!
Completed 10 locations with one object!
Completed 100 locations!
Collected 250 stars!
Passed 80 locations with 3 stars!
Used 75 hints!
Gained 100000 points!
Used 50 hints!
Completed 50 locations!
Played 50 games!
Passed 40 locations with 3 stars!
Collected 100 stars!
Used 25 hints!
Completed 20 locations!
Collected 40 stars!
Played 250 games!
Completed 30 locations with one object!
Completed 50 locations with one object!
Passed 150 locations with 3 stars!
Gained 500000 points!