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.
Embalm 100 bodies
Burn 50 bodies in the retort.
Get all endings.
Experience all major story events.
Get Rebecca's ending.
Enter the storage room.
Open the outside hatch.
Try to leave the mortuary.
Fail to banish the demon.
Beat the game without embalming all bodies.
Listen to all DJ Two-shades clips.
Become possessed for the first time.
Beat the game in under 45 minutes
Beat the game once.
It does nothing...
Complete your first body in the main game.
Get right back to work.
Would immerse again.
Try to use the phone during the start of the game.
Throw the red vase.
Complete the tutorial.