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