Here is the full list of all 39 Paw Paw Paw achievements.
Complete the story mode
Defeat King Bunnylord III
Unlock 50 weapons
Defeat Gragal
Defeat Root
Unlock Doggu
Unlock Domba
Break into the castle
Drink 100 potions
Reach level 10 on a character
Ride the Skywhale
Defeat Warden
Survive The Pit
Defeat The Dark Knights
Get into the city
Hit 10 innocent bystanders
Defeat Worm
Defeat Aegel
Skate off the avalanche
Defeat Baby God
Unlock Welu
Reach level 5 on a character
Defeat Grillz
Unlock Obek
Defeat Big Bad Pug
Push the payload
Play co-op with 4 Players
Play co-op
Unlock 20 legendary weapons
Recruit 50 companions
Spend 500,000 foods
Have 100,000 foods
Throw 100 bombs
Ride 100 mounts
Reach max level on a character
Die 100 times
Roll 1,000 times
Break 500 chests or barrels
Defeat 1,000 enemies