But if you want to be sure, after you finish a quest called "The Lost Father" Patty will search for a way to get out of Harbor town.Completing either "Where are the artifacts disappearing to?" or "Talk to the bandit chief of Harbor Town" will result in discovering "something" (won't spoil) that will allow you to leave the town and after you will be able to complete the quest.
Thank you for the useful information and for minimazing spoilers. :) I will keep an eye on this quest names
Also if you don't join the bandits in the swamp, be sure to complete their quests for some extra exp before the end of the chapter.
Thanks as well. Will I receive some indication that the chapter is ending? If I just don't join any factions until I've cleared these quests, will I be safe?
The first chapter ends when you complete a ritual after answering some questions you will understand what I mean. You will have to join a faction at chapter 1 so if you don't pick the bandits in the swamp try and finish their quest first before going to harbor town so go to the Bandit's camp in the swamp first and do all the quests until they let you enter the Don's house (find the 5 sword fragments, win against Brogar). After that the Don sends you to the Harbor town.
Before you do any quests in harbor town, decide whether you want to join the bandits, mages or inqusition later and fulfil the quests accordingly.
.Also here is a nice guide that has some interesting information about the game https://www.gog.com/forum/risen_series/any_generic_advice_for_a_newbie_when_playing_risen/post3
there is some interesting information on that thread that will help you without spoiling anything
(Direct link for the guide here http://www.mediafire.com/?tqqojgt2mzt
Also don't forget to save often...When I say often I mean every 5 minutes...In this game it is very easy to die...There is a quicksave and quickload button I believe it is F7,F8 or F9
And if you don't want to join the monastery faction (Inquisition faction) be sure not to get caught before joining the Bandit faction or the mages faction (to join mages you have to complete carlos quest in the harbor town