What I would also do is fight my arena battles of the three stronger minotaurs (forgot their name) with the difficulty set to the highest, and I would go in with around 1000 arrows, just shooting and shooting and shooting. I'd run out of arrows before they would even all be dead, and yeah, even after doing that a few times, my Marksman still has a long way to go. I just have a hard time convincing myself to continue doing it when it takes SO LONG. Ha ha.