Full list of all 48 Killer is Dead - Nightmare Edition achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Made Scarlett your prisoner in body and soul.
Ranked AAA executioner on 12 missions.
Cleared 12 challenge missions.
Cleared 6 challenge missions.
Made Koharu your prisoner in body and soul.
Changed costume to Ulti-mondo.
Increased BLOOD to maximum upgrade level.
Increased HEALTH to maximum upgrade level.
Completed Episode 12.
Cleared all episodes on Normal Mode.
Cleared all missions.
Completed Episode 11.
Unlocked 12 challenge missions.
Completed Episode 10.
Completed Episode 9.
Completed Episode 8.
Collected all female costumes.
Cleared 3 sub-missions.
Completed Episode 7.
Completed Episode 6.
Unlocked 6 challenge missions.
Sliced an enemy upward and finished it in the air.
Completed Episode 5.
Made Natalia your prisoner in body and soul.
Killed an enemy with an enemy attack.
Increased all sub-weapons to maximum upgrade level.
Completed Episode 4.
Killed an enemy using the "Burst Rush."
Have a total of $100 million in cash.
Completed Episode 3.
Increased all Attack and Special skills.
Completed Episode 2.
Completed Episode 1.
Killed 100 enemies using the "Head Shot."
Unlocked all challenge missions.
Cleared all challenge missions.
Cleared 6 sub-missions.
Cleared all sub-missions.
Ranked AAA executioner on 24 missions.
Ranked AAA executioner on 44 missions.
Received 20 rewards from the beauties.
Cleared all episodes on Hard Mode.
Cleared all episodes on Very Hard Mode.
Got revived by Mika 20 times.
Gave a present 50 times or more.
All achievements completed