Full list of all 12 New Rally-X achievements worth 200 gamerscore. It takes around 0-1 hour to unlock all of the achievements on Xbox 360.
Clear Round 4!
Clear Round 8!
Clear Round 12!
Clear Round 16!
Clear the first 7 rounds without losing a life!
Score 20000 points and gain an extra life!
Score 100000 points and gain a second extra life!
Collect the Special Flag.
Collect the Special Flag before collecting any other flag!
Collect the Special Flag before collecting another flag and finish the stage without losing a life!
Collect the Lucky Flag.
Collect a Lucky Flag with more than half fuel remaining.