Here is the full list of all 21 The Shapeshifting Detective achievements.
Agent X augmented you!
Picked Dorota's murderer first time.
You saved Ellis.
You shifted into everyone!
You got the Chief to lock people up.
You watched ALL of Dorota’s videos.
You listened to Lexie's ouija board theory.
You made it through the first hour.
You deleted a question!
You need to learn when to keep your mouth shut.
You told Oscar you were a Shapeshifting Detective.
You pushed Violet's buttons.
Rayne gets cross with Bron...
Congrats, you're getting married!
Bronwyn says she's immortal.
You went all the way with Zak's photoshoot.
You got freaky with Oscar.
You got punched by Poe.
You kicked Zak in the sack.
You left Ellis alone with Danny.
You got yourself killed.