First I want to say that Pathologic simply blew me away with its atmosphere, characters and story (what I've seen of it). I was a billionaire, I would buy your team and make you spend the rest of your lives making games for me .
My problem: whenever a game presents me with a choice of characters in the begining I'm unable to finish it. I've gone pretty far with the bachelor and then decided I should have chosen Haruspicus, deleted my save sames like a cretin and started again, only later to regret it. See, it wasn't that I haven't enjoyed their storylines (on the contrary), it's just when I pick one option I'm always thinking of the other one...
To the point: is there a code to unlock the third character, before finishing the game with one of the others? I really want to see how the game ends, but don't feel like doing the same quests again. I intend to do both bachelor and haruspicus later, when I forget them a bit.

i cant see official sites and "official walkthrought" i think there is some problem

Yes. It will be fixed soon.
As for the original poster - yes, I'll try to find the registry keys ASAP.