First, you will want to change some game options to make this easier. Press Start and change "Misses Allowed" to 6.
Controls
- Jump

- Open Chute

or

- Steer
The object of the game is to score points by jumping from the plane, opening your chute, and then landing in the designated area. The game will cycle through the letters of the word "SKYDIVER" at the bottom of the screen and if you land successfully by your flag, you will gain whatever letter it was on when you jumped. Collect each letter and you will gain a bonus as well as the achievement.