Earnestly, this is listed as for everyone? Not the wisest choice, right off the bat, you know, so I will take off an automatic star for that. However, the description is a little, well.. Decieving. Even if it plays in a fun way, the game is hardly dangerous; No arrow drop, not a manual reload, so that you have to make shots count.. So easy to line up headshots, that I might be able to see if you listed this as for everyone due to how simple it is.
All in all, this is just a typical, first person shooter with a fantasy tact. If you do really like these sorts of games, go ahead. But, unless the author happens to make the addition of a much more difficult game, it likely won't be worth the trouble.
Suggestions; Orcs should do quite a bit more damage, and along with that, if you could, you should animate a drawing back animation for the bow. Not only would this mend the ridiculous 4 chest shots you need, to just one if you're accurate, but headshots wouldn't be so silly and viable. If you're looking to make this arcadey, then keep it the way it is, but add a more difficult mode.
Perhaps even give a special weapon, rather than trophies, once you've beaten a specific number of rounds, but that's just my silly imagination.