And it depends a lot on what you mean by 'good'.
'Good', as in 'doesn't kill'? Tough, but doable, with the right chemicals. 'Good', as in 'doesn't break the law'? I ... don't think it's possible, considering the game, but for every impossibility there's a Don Quixote de la Mancha.
Essentially, make sure you create your definition of 'good' - what your morality is, what gets you righteously torqued off, and what will make you go all John Wick on someone. Keep it in mind, make sure you play it. For player good-vibes, try not to make it so that the other PCs are causing you to blow up at least once a session; that'll lead to SOMEONE storming out at some point. (ProTip - talk to the other players!!)
Typically, things like rape, child sex trafficking, cannibalism (questionable whether or not ghouls trigger this), drug/BTL pushing on the youth, heavy-duty mind-control - that sort of thing makes for good 'no farther' boundaries. Except for the cannibalism, at one point or another Hawatari's taken down a PC involved with that above list.