Complete each achievement to get the allotted gamerscore. The numbers between the () are the amount of points your recieve for each achievement.
Clear Round 12 (25) - Clear Round 12!
Clear Round 16 (30) - Clear Round 16!
Clear Round 4 (10) - Clear Round 4!
Clear Round 8 (20) - Clear Round 8!
Double Extend (20) - Score 100000 points and gain a second extra life!
Extend (10) - Score 20000 points and gain an extra life!
Fuel Bonus (10) - Collect a Lucky Flag with more than half fuel remaining.
Lucky Flag (5) - Collect the Lucky Flag.
No-Miss Round 7 (40) - Clear the first 7 rounds without losing a life!
No-Miss Special Flag (15) - Collect the Special Flag before collecting another flag and finish the stage without losing a life!
Special Flag (5) - Collect the Special Flag.
Special Flag First (10) - Collect the Special Flag before collecting any other flag!