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