>>121056114He got a load of extra digits merely by leaving his friend to die as a vegetable, but that only got him that far. What he was still lacking was the intention to kill without remorse and justification.
Then, acting on peer pressure, to maintain his status, he fought her, attempted to kill her like he only had done to Nulls before (against which his mind still had a justification: in his creed, they were not alive, thus it wasn't murder).
And that made him go higher, but not fully.
His number rises to what shows in the pic only in the exact moment he's defeated, and she saves him anyway. And, even though he sees it and understands the meaning behind it, he still decides to push her and attempt to kill her again, this time against every possible good reason. She was not a Null, and had tried to prove they weren't enemies, and he proceeded knowing that. That sealed the deal.
Most of the results and number changes on the Train are usually reached when you gain insight over an action, not merely by doing it to fulfill a job. He understood how wrong he was and how fulfilling he felt despite knowing that.
I wonder if the train system has any upper limit where it no longer attempts to help you and acknowledges you are beyond help. He spergs the moment he reaches full body number but we don't see if it has any effect on his mind as well, since he dies afterwards.
But if I had to answer your question, he probably tortured a few corgis.
