Master in Ski game
Pass through the first wall
Stay below the middle of the field for more than 10 seconds
Stay below the middle of the field for more than 15 seconds
Pass through the first five walls
Pass through the first ten walls
Crash for the first time
Crash for 3 times
Crash for 5 times
Get 100 points
Get 200 points
Stay below the middle of the field for more than 5 seconds
