Could you please post the errors you've encountered? And what quests that you weren't able to finish? If it's the baby potion one, I've recently uploaded the update game but only the PC for now, due to bad internet connections. And which bad end please? If you used Eve/Jon there are 2 bad ends, one if you follow Jon's mother request, another if you are too nice in the game (your morality bar at the bottom of the stat screen is majority in blue). If you encounter another ending that differs from both of those two, please let me know. As I've had no reports of such bug beforehand. Thank you and we apologize for the inconvenience
There is also a guide on Quest completion, here http://steamcommunity.com/sharedfiles/filedetails/?id=1130561978