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