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
Become possessed for the first time.
Try to leave the mortuary.
Would immerse again.
Try to use the phone during the start of the game.
Listen to all DJ Two-shades clips.
Get all endings.
Get Rebecca's ending.
Experience all major story events.
Beat the game without embalming all bodies.
Enter the storage room.
Open the outside hatch.
Throw the red vase.
It does nothing...
Beat the game once.
Fail to banish the demon.
Beat the game in under 45 minutes
Complete your first body in the main game.
Get right back to work.
Complete the tutorial.