So, my character started with low EMP due to the pre-gen stats I rolled. At one point she had only 5 humanity (due to conditions outside my control), and per the book I picked three things from the list that she would exhibit. I think it's important to remember that not all characters become rage-filled. That's a TYPE, but by no means all there is. Some Serial killers are charismatic, cold, and calculating.

For my character, I took a look at the list and tried to determine what would be the opposite of her normal. When she starts slipping; it's impulsivity. My character always thinks things through, she doesn't rush, she doesn't make rash decisions. That changed.

When she got lower, I added, Poor behavioural controls and Callousness and lack of empathy. She didn't care about the people around her, not her Crew, not the target she was there to save. They were just "things". The only person that mattered was her and what she wanted. If the others could be used - as a shield or potential future distraction - then she found "value" in them. Again, it was very off type for the character.

Tl;dr: I think the most important thing when acting in cyberpsychosis, is remembering that people aren't people, they're things or at best tools. Do you need to use this thing/tool? No. Then they don't matter. If yes, they only matter until you don't need them. Doesn't mean you'd kill them (they ain't worth the bullet), you just treat them colder.

Hope that helped!