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
Perform 300 parries.
Perform 100 stealth kills.
Beat all Arena levels.
Complete every chapter with 0 deaths.
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
Forward, Forward, High Punch. Chapter 12
Execute 300 enemies.
Kill 150 enemies using the environment
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
Shoot 500 enemies.
Clean out the greenhouse in Chapter 8
Parry 50 times
Kill 75 enemies using the environment
Break 100 weapons
Restore 1000% of health
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
Cook some kebabs in Chapter 5
Kill 3 enemies while Vasily is near death
Restore health from near death to full
Perform 40 stealth kills.
Kill 25 enemies using the environment
Win the duel against an old firend.
Shoot 50 enemies
Kill two enemies simultaneously
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