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