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 every chapter with 0 deaths.
Beat all Arena levels.
Forward, Forward, High Punch. Chapter 12
Turn the ruins into a crypt in Chapter 4
Complete the game on hardcore mode
Perform 300 parries.
Shut down the engines in Chapter 15
Destroy more than 50% of the walls in Chapter 14
Perform 100 stealth kills.
Mince some meat in Chapter 11
Be careful with the glass in Chapter 10
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
Be quicker than the big guys in Chapter 9
Kill 3 enemies while Vasily is near death
Execute 300 enemies.
This is a zero-waste production facility. Chapter 13
Break 100 weapons
Clean out the greenhouse in Chapter 8
Shoot 500 enemies.
Do it the oldschool way in Chapter 2
Perform 40 stealth kills.
Complete the game
Kill 150 enemies using the environment
End the rivalry once and for all
Restore health from near death to full
Restore 1000% of health
Defeat the guardians.
Kill 75 enemies using the environment
Kill five enemies simultaneously
Parry 50 times
Shoot 50 enemies
Kill three enemies simultaneously
Win the duel against an old firend.
Kill 25 enemies using the environment
Execute 30 enemies.
Feed the fish in Chapter 1
Kill two enemies simultaneously