Here is the full list of all 25 Kung Fu Panda: Showdown of Legendary Legends achievements worth 1,000 gamerscore.
Use 20 Different Awesome Attacks
Win an Online Match
Win 50 Matches
Win 5 Master of Inner Peace Matches
Check out a Fighter in the Character Bio
Win 5 All You Can Eat Matches
Win 5 King of Kung Fu Matches
Win 10 Timed Matches
Play 12 Different Levels
Win 10 Stock Matches
Win 10 Matches in Team Play
Play 8 Different Levels
Play 4 Different Levels
Play Practice
Complete all Tutorial Lessons
Use an Awesome Attack
Beat Tournament of Legends with 6 Characters
Beat Tournament of Legends with 12 Characters
Beat Tournament of Legends with 20 Characters
KO 1000 Opponents
Win 100 Matches
Win 200 Matches
Reach Instructor Mantis Online Ranking
Reach Master Mantis Online Ranking
Reach Master Panda Online Ranking