Necro'ing this thread because I actually just got the game. I previously tried Risen 2, but it just didn't click with me - this has.
Anyhow...I'm wondering if anyone who's completed this could let me know if it's possible to take the quests for all 3 factions in Harbortown? So far I've only been taking the quest of the group that follows the Don, but I've encountered a number offered by the Order. I'm planning on joining the Don's alliance and taking a more Rogue-like path, mostly because I almost always play casters in RPG's. I'd like to take the other quests for experience, but I don't want to jeopardize the chances of my PC joining the Don's alliance.
Yes you can do all of them, up until the point where they give you the obvious dialogue choice to join their faction. This XP system is a staple of the Gothic/Risen series.