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