Hitman 3 is a stealth assassin game developed by IO Interactive. A New Father achievement unlocks the secret ending and connecting it to the first Hitman game called Codename 47. If you choose to go through with this secret ending, you won’t be able to see the conclusion of what happened to Diana.
Diana wanted to become the head of the constant and try to stop providence from top-down. For this to happen agent 47 needs to dispose of the current constant head Arthur Edwards. Diana wanted revenge on agent 47 and Arthur Edwards for killing her parents but doesn’t blame 47 as she knows he was being used.
Hitman 3 A New Father
A new father is an achievement you get after unlocking the final secret ending. You need to reach the final map Carpathian Mountains, Romania where in the end you will meet Arthur Edwards. He will then offer you up a serum to inject yourself and forget everything. Now in the normal ending, you could either kill Arthur or use the serum on him.
If you wait for around 30 seconds, Arthur will ask “Second thoughts, perhaps we understand each other after all, go on then, free yourself. Lucas Grey was haunted by his humanity. But freedom from choice is also freedom, everything is so much simpler in black and white.”
After injecting yourself with the serum, agent 47 will blackout and will wake up later in a hospital with a voice in the head “Wake up. Wake up, my friend. It’s the dawn of a new day, and you have things to do.” Which is similar to the starting of the game Hitman Codename 47.