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.
Increased BLOOD to maximum upgrade level.
Increased HEALTH to maximum upgrade level.
Increased all sub-weapons to maximum upgrade level.
Increased all Attack and Special skills.
Ranked AAA executioner on 12 missions.
Changed costume to Ulti-mondo.
Cleared all episodes on Normal Mode.
Cleared all missions.
Completed Episode 12.
Completed Episode 11.
Cleared all challenge missions.
Unlocked all challenge missions.
Killed 100 enemies using the "Head Shot."
Made Scarlett your prisoner in body and soul.
Cleared all sub-missions.
Completed Episode 10.
Cleared 12 challenge missions.
Unlocked 12 challenge missions.
Completed Episode 9.
Made Koharu your prisoner in body and soul.
Completed Episode 8.
Killed an enemy using the "Burst Rush."
Cleared 6 sub-missions.
Completed Episode 7.
Made Natalia your prisoner in body and soul.
Cleared 6 challenge missions.
Cleared 3 sub-missions.
Completed Episode 6.
Unlocked 6 challenge missions.
Sliced an enemy upward and finished it in the air.
Completed Episode 5.
Completed Episode 4.
Killed an enemy with an enemy attack.
Completed Episode 3.
Completed Episode 2.
Completed Episode 1.
Have a total of $100 million in cash.
Collected all female costumes.
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