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