Successfully complete one of the following tasks to get a trophy:

Valedictorian (Bronze): All Park City challenges have been completed.
Baron Von C (Bronze): You've done so much shredding at Park City that everyone adores you. Good job.
Grouchbedoit (Bronze): Everyone in Europe thinks you are pretty awesome now. Way to go.
Terrani (Bronze): All Europe quests completed.
Itto-Ryu (Bronze): All Japan challenges have been completed.
Musashi (Bronze): Earn a tonne of respect in Japan.
All Aska (Bronze): All Alaska challenges completed.
Bizzy Bear (Bronze): All the animals in Alaska now respect your snow shredding prowess.
Slammy McSlammerton (Bronze): You've won the Triple Slam.
Supa Bounce (Bronze): You've earned the Big Air focus power.
Supa Flash (Bronze): You've earned the Speed Boost focus power.
Supa Powa (Bronze): You've earned the Power Shove focus power.
Dr. Air (Bronze): You've done an incredibly sick air trick.
Dr. Butter (Bronze): That was one gnarly ground trick.
Dr. Jib (Bronze): That was jibbing at it's finest. What a impressive score.
High Stakes (Bronze): You sent those other chumps to the poorhouse, and now you're the richest person I know.
The Gambler (Bronze): That wasn't much of a gamble. You beat those other riders easy.
Generation 2.0 (Bronze): Thanks for putting a video online. I bet it will totally be the best one on the internet.
New Kid on the Block (Bronze): You've won an event online. Let's hope this victory is the first of many.
Dizzy (Bronze): You make a strange looking helicopter when you spin that much.
Scenester (Bronze): You've mastered each Style Bonus.
Living on the Edge (Bronze): Riding a cliff edge for so long was intense. Maybe not very smart, but very cool.
Gravity Allergy (Bronze): That was a lot of hangtime. You must have legs made out of iron.
Trans Flat (Bronze): That was one loooooooonnnnnggggg butter.
Touchy Feely (Bronze): That was so many grabs in a single jump. Are your hands burning?
Whitewall (Bronze): You've earned a cascade of points from a single avalanche.
Mathemagician (Bronze): You had the multiplier maxed out for so long I forgot that it changes.
Big Run (Bronze): That was a totally impressive run.
Magnet (Bronze): You've done so many spins on a single rail, it made me sick just watching.
Like a Top (Bronze): You do longer butter spins than I've ever seen.
Connoisseur (Bronze): You've ridden a chairlift from bottom to top.
Dropping the Science (Bronze): That was an awesome sequence of big tricks.
Demon Sings (Bronze): You rock. Start headbanging..... now. \m/ \m/
It's Only a Game (Bronze): Wow. You should be dead right now, nice bail.
Airmail (Bronze): You knocked somebody out of the air with a snowball. You jerk.
Bonii (Bronze): Nice. You nailed a bunch of style bonuses in a single jump.
Ultimate Ultimate (Silver): You have completed every Ultimate Competition.
OMG. (Silver): You've earned a ridiculous amount of respect.
Mardi Gras (Silver): Played all challenges online in Park City.
Octoberfest (Silver): Played all challenges online in Europe.
Tanaba (Silver): Played all challenges online in Japan.
Ice Worm (Silver): Played all challenges online in Alaska.
Mecha Shredzilla (Silver): You have gained a ridiculous amount of respect while playing online.
CAPiTA (Silver): Win the CAPiTA SlopeStyle
Frequent Flyer (Gold): All the challenges on each mountain have been completed.
Y.T.M.N.D. (Gold): Incredible. You've beaten Shaun White.
Town Bicycle (Gold): You've played every challenge multiplayer. Way to go.
Platinum Trophy (Platinum): Unlock all other trophies.