Accomplish the indicated achievement to get the corresponding number of Gamerscore points:

The Aaron Ross Challenge (30 points): Do a manual » tailwhip » icepick » tailwhip on the neon bike.
The Lima Eltham (30 points): Do a barspin » turndown, barspin » table, and a kickout » table in one run.
The Bob Manchester (30 points): Do a backflip, a 360 turndown, and a frontflip kickout in one run.
The Chris Doyle (30 points): Do a 360 turndown, a 360 no foot can-can, and a 360 table in one run.
The Matt Priest (30 points): Do a 360 x-up, a 720, and a toboggan » x-up in one run.
The Chase Hawk (30 points): Do a kickout, a 360 can-can, and a 360 table in one run.
The Corey Bohan (30 points): Do a 360 one hand table, a barspin » tailwhip, and a superman in one run.
2001 (30 points): Do a backflip turndown, a double backflip, and a 360 turndown backflip in one run.
The Boss (30 points): Do a 360 table, a toboggan » table, and a one hand table » turndown in one run.
The Ben Wallace (30 points): Do a 360 old school, a backflip old school, and a triple tailwhip in one run.
The Anthony Napolitan (30 points): Do a double frontflip, a 360 superman, and a backflip triple tailwhip in one run.
The Pat Casey (30 points): Do a 360 barspin » double tailwhip, a 360 decade, and a backflip tailwhip in one run.
The Sean Sexton (30 points): Do a nose manual » barspin, a manual » tailwhip, and a superman in one run.
The Dan Lacey (30 points): Do a 50-50 » barspin, a 360 » icepick, and a turndown in one run.
The Ben Hennon (30 points): Do a 360 barspin » tailwhip, a 360 turndown » tailwhip, and an old school » no foot can-can in 1 run.
The Catfish Challenge (170 points): Complete 500 challenges.
Until The Wheels Fall Off (30 points): Complete 500 runs!
Bad Luck Extravaganza (70 points): Slam 666 times!
Get Dizzy (70 points): Spin over 108000 degrees!
The Aitken Challenge (70 points): Do 500 tables!
The Nyquist Challenge (70 points): Do 1000 barspins!
Until Your Legs Fall Off (70 points): Complete 1000 runs!