AvengedJoker alright now I'm starting to get what you are trying to tell, and I see the problem now, maybe a solution for heroes is giving negative guilt, so that if you are already without any guilt but still helping and doing all this stuff, your guilt will become negative, meaning that in sometime you would be able to kill someone without gaining any guilt at all. Tell me what you think about it. Maybe that could also happen with bandits, and since bandits will not gain as much guilt when killing someone as other players, they would also be able to kill people without getting guilt quite easy.
As I have seen, usually the most hardcore players will already be in either hero or bandit stage, meaning their guilt and paranoia will be a lot less frequent almost none at all.
Also, as I've seen, most hardcore players tend to play with other people, making it a suitable solution what DarkDevastooor said, making your guilt lower faster by just being nearby someone for long periods of time.
Please respond and tell me what you think, if you think they're suitable I'll add this ideas under your name to the additional information, if not well we could still discuss how to make this suitable for everyone.
Edit: After reading this again, I must say that it is better to give negative guilt to everyone, not as I stated there as only to heroes and bandits.