Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock	Points
Canyon Jumper	Beat track 2 in any CC.	70
Creek Beat	Beat track 3 in any CC.	90
Dirty Bike Harry	Collect the gun power up.	90
Dr. Doom	Beat 750 CC mode.	90
Eat My Dust	Collect the dust cloud power up.	90
Gorgeously Done	Beat track 5 in any CC.	90
Mortar-X	Collect the mortar power up.	90
Show Time	Beat 500 CC mode.	90
Showdown At Sundown	Beat track 4 in any CC.	90
Smoked Em	Collect the gas cloud power up.	90
Straight to the Dome	Beat track 1 in any CC.	30
The Kid	Beat 250 CC mode.	90