Amped
Xbox

From the main menu go to the "Options" menu and select "Cheats." Now enter the following:
Code	Effect
GimmeGimme	Level select
ZiPster	Unlimited movement
StickiT	Perfect jumps
WhirlyGig	Super spins
RidinwRaven	Play as Raven
ChillinwSteezy	Play as Steezy
MegaLeg	Higher jumping
buzzsaW	No tree collision

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Hints:

Get 400,000 points on Stratton 2:
Take an immediate right at the beginning of the run and head towards a house with a lot of rails around it. At times, when you attempt to grind these rails you'll get stuck (due to their height). Upon getting stuck, just do a grab and hold it until you have as many points as you need. Then just let go and fall out.