Here is the full list of all 69 Bunny & Piggy achievements.
Complete first level
Complete second level
Complete third level
Complete fourth level
Complete fifth level
Complete sixth level
Complete seventh level
Complete eighth level
Complete ninth level
Complete tenth level
Complete eleventh level
Complete twelfth level
Complete thirteenth level
Complete fourteenth level
Complete fifteenth level
Complete sixteenth level
Complete seventeenth level
Complete eighteenth level
Complete nineteenth level
Complete twentieth level
Complete twenty-first level
Complete twenty-second level
Complete the twenty-third level
Complete the twenty-fourth level
Complete twenty-fifth level
Complete twenty-sixth level
Complete twenty-seventh level
Complete twenty-eighth level
Find hidden food on the fifth level
Find hidden food on the sixth level
To go in the fake door
Take a dangerous jump
The secret is hidden in the clouds
Find a hidden carrot or acorn in the cave
Choose the wrong way
To die from the green crab claws
Back to the past..
Find the way out
Approach the closed door
The final dinner
To die from the green snake bite
To die from the blue shark bite
Finish the game
Complete third level for 12 seconds
To move a carrot
To die from the earwig bite on level 13.
Play level one with bunny, two with piggy, three with bunny, four with piggy
Complete twenty-first level in Hard mode
Go half way through a map and walk back to the beginning
Complete first dlc level
Complete second dlc level
Complete third dlc level
Complete fourth dlc level
Complete fifth dlc level
Complete sixth dlc level
Complete seventh dlc level
To die from saw
Jump between two saws
To die from snowman S size
To die from snowman M size
To die from snowman L size
To die from snowman XL size
To die from pulsating saw
Take the second dangerous jump
Suppose you are lucky today
Go through the maze
Escape the saws
To let Santa come first
Be first