Here is the full list of all 40 Redeemer: Enhanced Edition achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Complete the game on hardcore mode
Complete every chapter with 0 deaths.
Shut down the engines in Chapter 15
Destroy more than 50% of the walls in Chapter 14
This is a zero-waste production facility. Chapter 13
Forward, Forward, High Punch. Chapter 12
Mince some meat in Chapter 11
Be careful with the glass in Chapter 10
Be quicker than the big guys in Chapter 9
Clean out the greenhouse in Chapter 8
Let the others do your work in Chapter 7
Add a bit of pacifism to this bloodbath. Chapter 6
Cook some kebabs in Chapter 5
Who's there? Chapter 3
Do it the oldschool way in Chapter 2
Perform 300 parries.
Beat all Arena levels.
Perform 100 stealth kills.
Kill 150 enemies using the environment
Execute 300 enemies.
Break 100 weapons
Shoot 500 enemies.
Complete the game
End the rivalry once and for all
Restore 1000% of health
Kill 75 enemies using the environment
Defeat the guardians.
Parry 50 times
Restore health from near death to full
Kill 3 enemies while Vasily is near death
Perform 40 stealth kills.
Kill three enemies simultaneously
Kill five enemies simultaneously
Win the duel against an old firend.
Kill 25 enemies using the environment
Turn the ruins into a crypt in Chapter 4
Shoot 50 enemies
Execute 30 enemies.
Feed the fish in Chapter 1
Kill two enemies simultaneously