Various cheats

Unlock New Characters: 

Brodi:
     Use  code zenmaster then enter a lodge, select rider detail, then
cheat character. Alternately complete the Peak 1 Lodge.

Eddie:
     Use code worm then enter a lodge, select rider detail, then cheat
character. Alternately complete the Peak 2 Lodge.

Luther:
     Use  code  bronco  then  enter a lodge, select rider detail, then
cheat character. Alternately complete the Peak 2 Lodge.

Peak 1
JP: Complete the Peak 1 Lodge.
Marisol: Complete the Peak 1 Lodge.
Jurgen: Complete all Peak 1 goals.

Peak 2
Marty: Complete the Peak 2 Lodge.
Seeiah: Complete the Peak 2 Lodge.
Snowballs: Complete all Peak 2 goals.

Peak 3
Canhuck: Complete Peak 3 exploration goal.
Churchill: Complete Peak 3 freestyle.
Cudmore: Complete Peak 3 earnings Goal.
NW Legend: Complete all peak 3 goals.
Unknown Rider: Complete all peak 3 race goals.

Extra
Far East Myth: Get 100% in all mountain stats.
Gutless: Get a medal in all events.
Hiro: Collect all the trading cards.
Stretch: Collect all the posters.
Svelte Luther: Collect all the toys.
Bunny San: Collect all of the art.