Not really sure
that I fully understood the concept. The upgrades are cool I suppose, although they didn't seem to ever take effect for me. Kinda confused by the fact that arrows and shurikens hurt you if they hit you, but if you hit them you collect them? I think upgrades to the character rather than the item availability would have been preferable, or both even. And what's the deal with the sword? I could never use it =/
Good start but def needs improvement.