Level Up Glitch
In the beginning of the game, you will have to go on a mission called Tainted Blood. Collect the three vials of Darkspawn Blood, but do not collect the Grey Warden treaties. Return to Duncan with just the vials, and talk to him. Select the "We have the blood, but not the scrolls" reply, and you'll get experience points. Now, talk to Duncan again, and select the same response over and over again for continous EXP.