How hard is the game and how many hours of gameplay/content there are?

I'm down to 3 people to find in my quest to obtain all the achievements. This leads me to the question: Do people whose titles change due to the results of certain quests count as separate people? Also, who is Death? There is an achievement for playing Myth with Death, but I've never seen them before. Yet, on a different save, it shows complete for beating all possible players in Myth....

Under 1280x800 resolution, some UI is not displayed correctly. - When oversize or overweight, the text under buy button is blocked by who are you button - Sometime, the weight counter is not displayed. This happens when the size and weight number is too large....

So I'm trying to figure out what each profession likes by using the exported save file. (Just reading, not changing any values) When looking through the tags I see some inconsistencies (I'm a programmer with an eye for out of place stuff) F.e. a Cook has a large bias towards the tag: "spice", but no items have that tag. Spices all have the tag: "spices". So would that mean that cooks don't pay extra money for spices because the tags don't match? Same with a beggar. he has a bias towards the tag "dagger",...

I had read that having many different items causes some lagging with the game. Is there any fix or workaround for this issue?