Stealth is often imperative to your survival and you learn to enjoy and plan around it. Taking out an enemy one at a time like some sort of ghost assassin is a lot of fun. Hmm maybe they will call the next one that, Assassin's Ghost. Tasks of various sorts are dotted all over the map and are easy to stumble upon. You might be saving prisoners or shooting wildlife. When you complete tasks you gain experience, which later turns into ability points that you use to unlock awesome extra skills. Like the aforementioned pin-an-orc-to-the-floor-with-an-arrow trick. You can also add powers to your 3 weapons which you gain from defeating different level Captains. Remember Captains get harder as they beat up other Captains or you. So I suppose if you want you can kind of farm them. Get them up to a suitable level and then go hunt them down, to earn yourself some nice weapon bonuses and XP.