Here is the full list of all 20 Black Lotus Motel Playtest achievements.
Escape with at least 50 hours left.
Escape with at least 40 hours left.
Drink 20 Macabras in a row... *hip*!
Escape with at least 30 hours left.
Free the prisoner.
Win the game
Find all hidden mystery tokens.
Open the Craft Station door manually.
Unlock the deepest Motel secret.
Complete a labyrinth challenge.
Complete the balance challange.
Set all masks in their correct positions.
Pass the memory test.
Solve a jigsaw puzzle.
Unlock a door with color switches 10 times.
Open a room door from a color lock.
Unlock a door with color switches 5 times.
Unlocked a key.
Crack a console's password.
Pass the correct symbols.