Here is the full list of all 31 One Dog Story achievements.
Let’s play baseball
Albert has been executed
Brotherly Love
Restless mind
Rest In Peace
Be right back
High jump
Jet pack found
Hoverboard found
The King of Slugs has fallen
Cthulhu has been slain
Hydrophob is dead
The Keeper of the Underworld has been annihilated
The Rat King has been destroyed
The Needler is neutralized
The Keeper has been slaughtered
I’m the boss here
You’re on your own
Bonus weapon
all collectables have been found
Yay!
Not enough air
Got smashed to smithereens
You only live once
Gobbled up
Abyss-mal fall
Piece of cake
Everything in moderation
Huh, am I still alive?
Robot X01 has been destroyed