This is pretty fun. But the medals seem broken for me; I got the achievements ingame, but only got a handful of medals. Something's wrong when I have H13, but not H2.
Also, here's a little quirk/oversight you can use to get rupees even faster: When you talk to the game master, any onscreen arrows and targets freeze. When you're down to your last arrow, stand right next to him and fire an arrow that will hit a target, but talk to him before it hits. When your arrows refill, the arrow will hit and give you 4 rupees as normal, but you'll still have the five new arrows. In other words, you can shift the combo one step forward. Assuming you get a perfect five shots on the new set, you'll get 8, then 16, then 32, then 64 rupees as normal, but the final arrow will give you 128 rupees.