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