Here is the full list of all 33 Perception achievements.
Completed every chapter
Completed Chapter 4
Found out what happened to the animals
Found every touchstone
Found all touchstones in Chapter 4
Found Susanna's sanctum
Found every poppet
Found 2 Poppets in Chapter 4
Completed Chapter 3
Found all touchstones in Chapter 3
Found Kirby
Found 5 backer letters
Found 2 Poppets in Chapter 3
Completed Chapter 2
Found all touchstones in Chapter 2
What we do in life...
Turn around…
Found 2 Poppets in Chapter 2
Completed Chapter 1
Found all touchstones in Chapter 1
Found backer recording
Is it going to get old?
Found 2 Poppets in Chapter 1
Best damn bartender
Got the key from the good Doctor
Listened to every Dearest Pinky song
Used the telescope
Found Nanci Chang's takeout menu
Listened to all of Cassie's messages
Got every other achievement in the game
Never captured by The Presence
Completed without tapping
Completed the game on Scary Mode