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