Here is the full list of all 42 Grass Cutter achievements.
Kill several enemies in less than 1 second
Complete The Boss Level
Destroy a Robot
Destroy a Quadcopter
Scare the dogs 20 times
Dive into the water 20 times
Disable 50 monsters
Set the record time 25 times
Visit an island paradise at the gates of paradise for the first time
Scare the cats 15 times
Get wet in the rain
Enter the country of sweets for the first time
Gather up energy when there is less than 5% left
Scare the birds 50 times.
Open the secret level from the future for the first time
Cut 1000 squares with grass
Immerse the first box
Get the first reward
Talk to the President
Complete the story company
Find all the secret doors
Complete all the secret levels
Earn 300 points in Master Pack game mode
Earn 500 points in Master Pack game mode
Earn 1000 points in Master Pack game mode
Use freeze time 15 times
Use a bomb.
Take a mud bath 20 times
Drive by 10 times on the sand
Jump off a cliff
25 times, purchase 15% of the energy
Face the monsters 50 times
Earn the maximum level for the assistant
Who cares about the barriers, I'm driving where I want. Break 100 barriers
Achieve the maximum rank
Unlock All Weapons
Unlock Maximum Level HP
Unlock Maximum Energy Level