Turn on cheat mode:
     Go  to  "Options" at the main menu, then select the "Cheat Codes"
tab.  Press  one  of  the  next button combination codes at the "Cheat
Codes" screen:

Cheat code:                                       Effect:
RT, X, LT, Down, Right, LB, LT, RT, Y, X          All sleds
Up, R, X, Y, LB, X, Down, LB, R, RB               Full awesome meter
Left, RT, LB, RT, X, X, Y, Down, Up, X            All build licenses
LT, RT, Up, Up, RB, Left, Right, X, Y, LB         All build objects
Right, LB, LT, X, Left, RB, RT, Y, LT, X          All challenges
Down, X, Right, LB, Right, RB, X, RT, LT, Y       All configs
Y, Down, Up, Left, Right, LB, Right, RT, RT, RB   All gear
X, Y, Up, Left, LB, LB, RT, X, Y, LT              All levels
Up, Left, RT, RB, RT, Up, Down, Left, Y, LT       All music
LB, RT, Y, Up, Down, X, LT, Left, RB, RT          All tricks
Y, RT, RT, LB, Down, DOwn, Left, Left, Right, LB  Loud  speakers
RT, Down, Down, Up, X, LB, Y, RT, Y, Down         Low gravity boarders
X, X, LB, Down, Right, Right, UP, Y, Y, LT        No AI
X, X, X, X, Y, Y, Y, X                            Super spins

If you typed a correctly, "On" will appear on screen.


Unlock Hang glider slide:
     Finish the story mode.

Unlock Park Builder items  
     Reach  the following points in a combo to unlock the unlock items
in Park Builder mode:

Helicopter: 800,000 points 
     Lighthouse: 1,000,000 points


Achievements:
     Finish  the  following achievements to award Xbox Live Gamerscore
points.

Viva Valle! (60 gamerscore points): 
     Impress  the  required number of bystanders in each area of Valle
Nevado to Own the Mountain.

Vamonos a South America (80 gamerscore points): 
     Finish Act 2 of story mode.

Supreme Snow God (140 gamerscore points): 
     Earn a Gold medal for All challenges and media callouts.

Snowmobiler Merit Badge (30 gamerscore points): 
     Travel over 10 kilometers on a snowmobile.

Snowbird Dawg (60 gamerscore points): 
     Impress  the  required  number  of  bystanders  in  each  area of
Snowbird to Own the Mountain.

Snowbird Bound! (70 gamerscore points): 
     Finish Act 1 of story mode.

Sledding Merit Badge (30 gamerscore points): 
     Reach more than 1,000,000 gamerscore points in sledding scores.

ReunitedAnd It Feels So Good (100 gamerscore points): 
     Finish Act 4 of story mode by rescuing the rest of the crew.

Rescued Weiner Boy! (90 gamerscore points): 
     Finish Act 3 story mode by rescuing Weiner Boy and gaining access
to the secret C.A.I. area.

Park Designer Merit Badge (30 gamerscore points): 
     Build over 200 terrain park objects.

Northstar Nirvana (60 gamerscore points): 
     Impress  the  required  number  of  bystanders  in  each  area of
Northstar to Own the Mountain.

Lesser Snow God (70 gamerscore points): 
     Earn any medal for All challenges and media callouts.

Laax Stock And Barrel (40 gamerscore points): 
     Impress the required number of bystanders in each area of Laax to
Own the Mountain.

King Of The Mountain Lab (40 gamerscore points): 
     Impress  the  required number of bystanders in each area of DC to
Own the Mountain.

Big Musical Finale (100 gamerscore points): 
     Beat the Baron.