Here is the full list of all 52 Pig Eat Ball achievements.
Beat First Royal Clam
Eat 1,000 Balls
Barf 1,000 Balls
Break 1,000 Blocks
Eat 10,000 Balls
Barf 10,000 Balls
Break 10,000 Blocks
Trash 50 Items
Collect 10 Disguises
Collect all Disguises
Barf on 50 Torches
Beat Accordion Centipede
Beat Octo Tako
Beat Nacho Friend
Beat Astral Boar
Beat Gooster
Burn Pillbug
Dart Pillbug
Dart Pillbug very quickly
Make Pillbug dance with Party Hat
Launch 10 Pillbugs into space
Fill a Pillbug with Barf
Spit Pillbug into 3 Others
Suck 5 Spikeballs through straws
2 Minute pillbug barf-fest
Keep sliding on tempura shrimp oil for a while.
Clear Gold Clam
Spit Bomb Last Second
Spit 3 Bombs 1 Second
Free 3 Yummies from ice in 1 second
Bounce Cue 7 Times
Run single bull around for a long time.
Hit Self With Dart
Eat all yummies in a level in a single max boost.
Eat all yummies in a level while not boosting.
Win a Multiplayer Level
Beat 10 Levels Gold
Beat 20 Levels Gold
Get Better Time
All Gold World
All Gold Game
Use Powerup on Level Start
Get 10 Powerups in Overworlds
One Each Powerup
Five Each Powerup
Help Kim
Make and save a level in the level editor
Break All Brambles in a level
Eat 10 ghosts
Star Chase Perfect
Dart pillbug from off screen.
Beat Spaghetti Yeti