Here is the full list of all 30 Buddy Simulator 1984 achievements.
Thanks for petting me!
Play the drum 20 times.
I don't think he did anything wrong.
Make it through a fight without you or your friends getting hurt.
Achieve every achievement in our game. You really do care.
This is our perfect ending.
I should have known better.
I do not exist, because I eventually won't exist.
You and I against the world. Don't forget that, okay?
Name the town to the north!
Defeat the Snoodlewonker once and for all.
Help Levi finally find his place in the world.
Help Bronkh find the perfect bard to mentor.
Defeat the Shape Gang.
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Recruit your party.
Use the Buddy Button 20 times.
Sleep so I can makes things better.
You found The Sword!
Make a wish in the well.
Listen to Lloyd read his poetry for 1 minute.
Have Morton greet a familiar friend in Toot's Tavern.
Leave Morton with Lloyd.
Find Treevor and leaf him alone.
Cook Dead Gwandma in Cauldron's new dish.
Discover Phoney.
Enjoy your new bedroom.
Find the severed hand while fishing early.
Try the pond water.
Thanks for waking me up!