If you do nothing, you'll be locked into bad ends. My advice would be to pay attention to what information can be gotten by seeing the bad ends all the way through, Then, see how you could use that information in a second playthrough.
I haven't really gotten any information. I'm actually not entirely sure what the goal is. The password and dating aspects seem to be completely separate and parallel to me, but maybe I just haven't gotten far enough for the link to be apparent.
It's also supposed to be a murder mystery, and both deaths I've seen so far appear to be suicides, so... I'm definitely missing something.
I'm getting them now. Haven't done all the routes yet, though.
Though... I'm even more confused with Orlando's route, since I apparently "saved" him... without entering any passwords at all. Like he doesn't even have a bad ending. Maybe a coding error?
I do have a savepoint right before the character choice that I've been using for multiple routes, but I don't *think* there's any password entered there, and if there is it's definitely not specific to Orlando. And it would have to be pretty early.