At the cheat menu type in CLAPPEDOUT in the completion career.
BIGDOGS - 500cc bikes
BUSTBIG - Freestyle tracks
ECONATION - National tracks
MINIGAMES - Unlock all machines
OBTGOFAST - Expert A.I.
SQUIRRELDOG - 50cc Bikes
STUPERCROSS - Supercross tracks
SWAPPIN - Pro Physics
WRECKINGBALL - A.I. Bowling
500cc 4-Stroke Bikes Beat all 250cc Career races in first place
50cc Bikes Beat all 125 cc career races in first place
Expert A.I. Achieve World Ranking #1 in Career Mode
Pro Physics Achieve World Ranking #1 in Career Mode
If you leave the game at the title screen for three minutes, a demo race will start. You can join the race by pressing X.
The Rigor mortis is a good point trick.To do the rigor mortis you need some speed and air (try preeloading your suspention)code:B+Y,Rtrigger down