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