HITMAN World of Assassination

This achievement is rewarded for viewing the secret Easter Egg ending to the game on Carpathian Mountains' Untouchable mission.

Upon reaching the end of the train and talking to Arthur Edwards, you'll be given a Serum to take him out. You can also use your weapon, and other objects on the train. Instead, wait 47 seconds, and a new option will appear where you can inject yourself. Do this and unlock the "A New Father" redacted challenge, this achievement, as well as a very cool original Hitman easter egg.

This Mission is pretty simple, Fight your way through the train until you get to the very end car. Once you approach the suspect, The game will tell you to kill him. Do not kill him. Locate the serum on his desk and wait until it prompts you to use it on yourself.



Here is a youtube tutorial that I used.