You should always remain true to yourself. And in the game, you should also be guided by your own principles. Philosophy is shaped by us, and you should play according to your philosophy.

Still, you need to separate the game from reality. If I kill everyone indiscriminately in the game, it doesn't mean that I am the same in real life and that the people around me are meaningless. It's just that sometimes a game is needed to release excess adrenaline and negative emotions, and it has nothing to do with reality.

P.S. You should definitely read "The Chronicles of Amber," it's a MASTERPIECE. And not only in terms of the philosophy of good and evil, but in many other aspects as well.