Here is the full list of all 9 Pandarama: The Lost Toys achievements.
Get on all levels not less than 3 stars
Complete all the stages in Chapter 1
Get on all levels not less than 2 stars
Get on all levels not less than 1 stars
Hit 100 bonus clouds
Throw Panda 250 times
Throw Panda 100 times
Fly out of the stage
Throw Panda 50 times