Here is the full list of all 29 Bumble Butt achievements.
Started your first game!
Reached Level 5!
Reached Level 10!
Reached Level 15!
Reached Level 20!
Reached Level 25!
Reached Level 30!
Reached Level 35!
Reached Level 40!
Reached Level 45!
Reached Level 50!
Completed the game!
Completed the game on a single credit!
Smooshed a bouncer bug!
Smooshed a charging bug!
Smooshed a chasing bug!
Smooshed a cluster of bugs!
Smooshed a cluster spawned bug!
Smooshed an exploding bug!
Smooshed a butt blasting bug!
Smooshed a mine dropping bug!
Smooshed a spitting bug!
Smooshed a vomiting bug!
Smooshed a ladybug!
Smooshed a soldier ant!
Smooshed a queen ant!
Smooshed a targeting bug!
Smooshed a wandering bug!
Smooshed a snail!