Here is the full list of all 11 Pix the Cat achievements.
All levels succeeded with flower bonus... not possible
Finish every single level
Score 1 500 000 points in the arcade dessert grid
Score 2 000 000 points in the arcade main grid
Fever mode frenzy for 120 seconds
Score 1 000 0000+ pts 5 games in a row
Top 100 of a daily leaderboard
Top 10 of a daily leaderboard
All levels succeeded with perfect bonus... good luck
Finish each and every puzzle
Perform 10 perfects in a row