Hannah will have been totally ruthless all the way through. If she didn't claim an ice pick from someone, she'll have gone through with finding something on the train as a weapon. However, with her failure to use the medkit given to her, her giving no attempt to help anyone teammate or civilian, and her hesitation (to possibly just not doing so?? I was going to see how the thread went and if people were okay with that) in stopping the train would've resulted in a definitive failure.