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