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