Here is the full list of all 40 Fluttabyes achievements.
Obtained all achievements
See all 4 backdrops
Create a 7 ladybird bonus
Create a yellow 7x7 shape
Create a green 7x7 shape
Create a blue 7x7 shape
Create a red 7x7 shape
Create a purple 7x7 shape
Get your first rainbow butterfly
Place a rainbow butterfly on a ladybird
Create a 6x6 shape
Survive for 5 minutes
Score 500,000 in Survival
Score 1,000,000 in Survival
Survive for 2 minutes
Score 100,000 in Survival
Re-start a Survival Game
Refill the dandelion
Play Endless for 2 minutes
Play Endless for 5 minutes
Play Endless for 10 minutes
Play Endless for 20 minutes
Score 1,000,000 in Endless
Score 5,000,000 in Endless
Score 10,000,000 in Endless
Create a 5 ladybird bonus
Create a 6 ladybird bonus
Create a 5x5 shape
Create a 4 ladybird bonus
Create a 4x4 shape
Get a line of 6 butterflies
Get your first double combo
Play Survival and Endless in the same hour
Upload your score to the online leaderboard
Survive for 30 seconds
Place your first ladybird
Get your first combo bonus
Get a line of 7 butterflies
Get a line of 5 butterflies
Get a line of 4 butterflies