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