Here is the full list of all 30 Nobodies: After Death achievements.
Keep throwing balls at the carnival game pins.
Complete the game without using the phone.
Finish the game.
Complete the cruise mission without leaving any evidence behind.
Kill every character that can be killed.
Keep making up distractions for the concierge.
Complete the bank mission without leaving any evidence behind.
Complete the rocket mission without leaving any evidence behind.
Throw a body into every dumpster you can find.
Keep trying to find a use for the cone.
Complete the amusement park mission without leaving any evidence behind.
Launch the body from the cannon using each weight setting.
Knock down all of the prizes at the carnival game.
Complete the Sky Tower mission without leaving any evidence behind.
Use the bathroom in Sky Tower.
Forget the elevator passcode so many times that you fail the mission.
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Complete the mansion mission without leaving any evidence behind.
Become one with the universe.
Complete the national park mission without leaving any evidence behind.
Dispose of the body within ten seconds of starting a mission.
Complete the mine mission without leaving any evidence behind.
Take a picture of the mine's map after killing the boss.
Complete the airport mission without leaving any evidence behind.
Check in for your own flight.
Complete the cemetery mission without leaving any evidence behind.
Interrupt the gardener's beauty rest.
Complete the diner mission without leaving any evidence behind.
Complete the swamp mission without leaving any evidence behind.
Complete the oil platform mission without leaving any evidence behind.