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