Here is the full list of all 25 Kung Fu Panda: Showdown of Legendary Legends trophies - there are 2 bronze, 16 silver, 6 gold and 1 platinum.
Win an Online Match
Win 5 Master of Inner Peace Matches
Win 5 King of Kung Fu Matches
Win 10 Timed Matches
Play 12 Different Levels
Use 20 Different Awesome Attacks
Win 10 Matches in Team Play
Play 8 Different Levels
Win 200 Matches
Win 100 Matches
Win 50 Matches
Win 10 Stock Matches
Win 5 All You Can Eat Matches
Play 4 Different Levels
Complete all Tutorial Lessons
Play Practice
Use an Awesome Attack
Earn every Trophy in the game
Beat Tournament of Legends with 6 Characters
Beat Tournament of Legends with 12 Characters
Beat Tournament of Legends with 20 Characters
KO 1000 Opponents
Reach Instructor Mantis Online Ranking
Reach Master Mantis Online Ranking
Reach Master Panda Online Ranking