Here is the full list of all 32 The Weird Dream achievements.
Reattach the wires to the robot
Defeat the rock boss in it's second phase
Defeat The Stellar One
Fall down from your home
Unlock your first catalog entry
Unlock all catalog entries
Defeat Cinderella
Enter the circus
Stuffed animals filled with memories
Defeat Midi
Collect all stars
Defeat Naide
Time to run!
Defeat the statue
Defeat Xi
Collect all sentiences
Collect all experiment logs
Defeat the Book of Radiance
Defeat the nail and hammer
Defeat the drawing hand
Acquire your first rune
Acquire all runes
You are rich
I messed up...
Defeat Metlink
Defeat Heiger
Defeat Nian
Defeat Collins
Defeat Domino
Defeat Yog
Unlock all other achievements
Defeat all mirror boss with no damage taken