Stop making assumptions about the fail rate because you are afraid of getting stabbed.
There is no assumption here. The goal is assassination. To kill. It never happens. You fail at achieving this goal %100 of the time. The mechanics do not allow for more than "You hurt him bad and escape without being identified". That is not a successful assassination.
I am not saying that this is bad or unintentional. I admit that I do not like it personally. I want characters, including my own, to die. Die in battle, die by assassination, die of old age. I also know this will not happen. So be it!
