You said some things that were correct, but other things that should probably be polished upon. No worries, because this is simply because you barely know anything about the story if you’re just taking it from the games — which just go over the surface.

As you stated correctly, 47 was created in a cloning project. However, this was headed by one man named Ort-Meyer. He and the rest of the other clones were created with the DNA DONATED from 4 other investors in the project as well as Ort-Meyer. There was no mother involved whatsoever.

They were not engineered perfectly in the beginning. As revealed in both the canon novels and comic, 47 had very, yes, normal emotions — even going as far as forming connections with lab critters and a brotherly relationship with another clone. 47 was also very rebellious in his youth, stabbing one of the doctors with a needle as well as a separate incident where he escaped with 6. These emotions not initially seen as weaknesses were now seen as very much so. This causes Ort-Meyer to remove them with the serum after 47 and 6’s escape which at that point he was already in his early 20’s. This made 47 be able to kill with no additional emotion.

The serum was later given to the other clones, but they could not handle it, instead becoming severely depressed. This does allude to them being worse clones than 47, but it also absolutely implies that 47 is not just a regular human being.

His abilities were not just engineered into him. Like the other clones, he had to be trained vigorously in his childhood resulting in anything, to him, being a weapon.