Full list of all 25 The Mortuary Assistant achievements. It takes around 25-30 hours to unlock all of the achievements in the base game on Windows.
The base game contains 21 achievements, and there are 2 DLC packs containing 4 achievements.
Burn 50 bodies in the retort.
Embalm 100 bodies
Try to leave the mortuary.
Get all endings.
Try to use the phone during the start of the game.
Enter the storage room.
Open the outside hatch.
Listen to all DJ Two-shades clips.
Get Rebecca's ending.
Beat the game without embalming all bodies.
Experience all major story events.
Become possessed for the first time.
Beat the game once.
Throw the red vase.
It does nothing...
Beat the game in under 45 minutes
Fail to banish the demon.
Complete your first body in the main game.
Would immerse again.
Get right back to work.
Complete the tutorial.