I have a group of characters hunting for a precious item. I want my characters to have problems reaching the item, problems that come in the way before they can get to it. I can give an example. Firstly, troops of antagonist appear to fend them off. These sorts of occurances, not that the item just keeps going further away. However, I am unable to think up ways in which I can arch out problems. Like, use the characters flaws, in a way? I need more ideas. Please suggest.