Will give you the xp points and fame you get form quest. Mainly you want to finish the game in the shortest amount of time and do as many quest as you can.

Combine that with killing as many beast as you can and you get a higher score.

If you can do the quest and killing in say 16 months, you will get about 42,000.

If you can do it in 25 days, you get about 740,000.