Full list of all 33 Perception achievements worth 1,100 gamerscore.
The base game contains 32 achievements worth 1,000 Gamerscore, and there is 1 DLC pack containing 1 achievements worth 100 Gamerscore.
Completed Chapter 2
Completed Chapter 1
Best damn bartender
The galaxy is at peace
Got the key from the good Doctor
Listened to all of Cassie's messages
Listened to every Dearest Pinky song
Found Nanci Chang's takeout menu
What we do in life...
Found 2 Poppets in Chapter 1
Found 2 Poppets in Chapter 2
Found 2 Poppets in Chapter 3
Found 2 Poppets in Chapter 4
Found every poppet
Found out what happened to the animals
Found all touchstones in Chapter 1
Found all touchstones in Chapter 2
Found all touchstones in Chapter 3
Found all touchstones in Chapter 4
Found every touchstone
Turn around...
Found Kirby
Completed Chapter 3
Completed Chapter 4
Completed every chapter
Found 5 backer letters
Found the backer recording
Is it going to get old?
Got every other achievement in the game
Found Susannah's sanctum
Never captured by The Presence
Completed without tapping
Completed the game on Scary Mode