Here is the full list of all 19 Mimi the Cat: New Friends trophies - there are 2 bronze, 7 silver, 9 gold and 1 platinum.
Complete all trophies
Complete 2 levels.
Complete 10 levels.
Complete 15 levels
Complete 20 levels.
Complete 25 levels.
Complete 30 levels.
Collect a skin. First one's on level 8
Select other skin
Use the help button
Jump to another part of the level
Jump 5 boxes
Jump 7 boxes
Jump 10 boxes
Reset the level 3 times
Reset the level 5 times
Pile 5 boxes
Pile 7 boxes
Finish one level without help