Collect 10 stars in one game.
Collect 20 stars in one game.
Collect 40 stars in one game.
Get 400 points in one game.
Get 100 points in one game.
Get 800 points in one game.
Collect 100 stars overall.
Collect 10000 stars overall.
Collect 1000 stars overall.
Get 800 points in one game in fast mode.
Play 10 games.
Play 500 games.
Play 100 games.
Unlock 5 planes.
Play 3 days in a row.
Get 100 shield power-ups.
Play 10 days in a row.
Get 100 speed-boost power-ups.