Here is the full list of all 21 Pangaroids achievements.
Scored 1,000 points in one game
Scored 2,500 points in one game
Scored 5,000 points in one game
Scored 10,000 points in one game
Collected 1 powerup in one game
You played your first game of Pangaroids!
Scored 25,000 points in one game
Scored 50,000 points in one game
Scored 100,000 points in one game
Survived for 1 minute
Survived for 2 minutes
Survived for 3 minutes
Survived for 4 minutes
Survived for 5 minutes
Survived for 10 minutes
Survived for 15 minutes
Collected 5 powerups in one game
Collected 10 powerups in one game
Collected 25 powerups in one game
Collected 50 powerups in one game
Collected 100 powerups in one game