Here is the full list of all 50 Create trophies - there are 41 bronze, 6 silver, 2 gold and 1 platinum.
Unlock all Trophies
Place all types of animals throughout the game
Collect all 610 Sparks
Use every type of rocket within Challenges (not player generated Challenges)
Collect 501 Sparks
Eat 50 slices of toast within Challenges (not player generated Challenges)
Unlock Future World II
Unlock Outer Space II
Unlock Family Home II
Attach 50 objects which have string to another game object
Unlock Theme Park II
Collect 284 Sparks
Unlock Darkworld
Use every brush in Paint mode
Complete a car based Challenge after all its wheels have burst (not player generated Challenges)
Unlock Pirate
Unlock Urban Sports
Burst 100 balloons within Challenges (not player generated Challenges)
Solve Challenge 10 in Transportopia entirely with Horseshoe Magnets
Submit an entry to a Community Challenge
Solve 20 player generated Challenges
Solve 10 player generated Challenges
Unlock Future World
Place the Create team's favorite animal!
Set off 50 explosions within Challenges (not player generated Challenges)
Unlock Ancient History
Solve a Contraption-o-Matic Challenge with a contraption built of 40 or more parts
Unlock The Great Outdoors
Collect 100 Sparks
Remix and save a downloaded Creation
Mark the content of 10 different online users as a favorite
Save a Creation or a Challenge from within the Free Create level
Finish five Create Chains within one level
Unlock Outer Space
Drive 2,000 meters in vehicles within Challenges (not player generated Challenges)
Solve a player generated Challenge
Download an EA Pick
Mark an EA Pick as one of your favorites
Upload a remixed Creation
Rate the Creation of another online user
Download another user's Creation
Mark another user's content as one of your favorites
Unlock Family Home
Upload a Creation
Unlock Transportopia
Reach a x20 multiplier in a Scoretacular Challenge
Upload a Solution
Unlock Theme Park
Solve your first Challenge
Earn your first Spark