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
Perform 300 parries.
Beat all Arena levels.
Complete every chapter with 0 deaths.
Kill 150 enemies using the environment
Complete the game
Shut down the engines in Chapter 15
End the rivalry once and for all
Destroy more than 50% of the walls in Chapter 14
Execute 300 enemies.
This is a zero-waste production facility. Chapter 13
Mince some meat in Chapter 11
Perform 100 stealth kills.
Be careful with the glass in Chapter 10
Break 100 weapons
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
Kill 3 enemies while Vasily is near death
Cook some kebabs in Chapter 5
Kill 75 enemies using the environment
Do it the oldschool way in Chapter 2
Who's there? Chapter 3
Forward, Forward, High Punch. Chapter 12
Shoot 500 enemies.
Parry 50 times
Perform 40 stealth kills.
Defeat the guardians.
Restore 1000% of health
Kill five enemies simultaneously
Kill three enemies simultaneously
Win the duel against an old firend.
Shoot 50 enemies
Kill 25 enemies using the environment
Restore health from near death to full
Turn the ruins into a crypt in Chapter 4
Execute 30 enemies.
Feed the fish in Chapter 1
Kill two enemies simultaneously