Here is the full list of all 12 Just Dance Kids 2 (EU) trophies - there are 8 bronze, 3 silver and 1 gold.
Danced through Regular mode!
Danced through Team High Score with 2 players!
Danced through Freeze & Shake!
Created "Your Playlist" in Playlist mode!
Danced through 1 preset Playlist in Playlist mode!
Danced through 1 Medley!
Danced through songs in Team High Score 50 times in multiplayer!
Danced through songs in Freeze & Shake 50 times!
Danced through 50 Medleys (outside Non-Stop Shuffle)!
Danced through songs in Regular mode 50 times!
Earned 12,000 or more points in any song in Regular mode!
Earned at least 12,000 points in all songs in Regular mode!