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