Here is the full list of all 44 Evil Dead: The Game achievements.
Kill 500 Evil basic units
Kill 50 demon elite units
Kill 10 boss units
Hide Ash's hand in a chest and scare a survivor who opens it
Perform 10 special attacks
Perform 100 finishers
Revive an incapacitated teammate 30 times
Resurrect 10 teammates' souls at an altar
Successfully collect 20 Lost Pages
Turn on 50 light sources
Kill 10 Deadites with headshots
Kill a Deadite with your bare hands
Find 300 items with the flashlight
Free 10 possessed teammates
Run over 50 Deadites with a car
Drive the Delta 88 while playing as Ash
Honk a car's horn
Drive a car with all your teammates in it
Finish a match with Ash (The Evil Dead), Cheryl and Scotty in your team
Finish a match with Ash (Evil Dead 2), Annie Knowby and Ed Getley in your team
Finish a match with Ash (Army of Darkness), Lord Arthur and Henry the Red in your team
Finish a match with Ash (Ash vs Evil Dead), Kelly and Pablo on your team
Finish a match with four Ashes on your team
Win 30 matches as a Survivor
Defeat the Dark Ones
Kill 20 boss units
Fully upgrade 5 Survivor categories using Pink F points
Kill 50 Deadites with a legendary weapon
Unlock all of a survivor's unique skills
Reach the maximum level with a Survivor
Possess 50 basic units
Possess 25 elite units
Possess 10 boss units
Possess 10 Survivors
Run over a Survivor with a possessed car
Win 30 matches as a demon
Win a match as a demon without possessing a boss unit
Possess a tree and hit two Survivors at once
Kill a Survivor as a possessed Survivor
Kill 10 Survivors as a boss unit
Fully upgrade 4 categories using Infernal Upgrade Points
Unlock all of a demon's unique skills
Reach the maximum level with a demon
Reach the maximum user level