I like the idea! The whole game could be sped up a little i think, its a little slow in general, especially in the beginning when there are very few enemies to keep track of. Still fun though :)

I like the idea, it absolutely satisfies the theme. With a little more work on it, it can became a really fun game. 

Cool attempt. Having the crossbow always attack the enemy at the front would do a lot to reduce stress, or maybe have it so the player can click on specific enemies they want to crossbow to attack if they need it to. Other than that, pretty good for a quick game. :)

Turns out that having just one crossbow works perfectly!
I would increase the pacing a little bit. I played the normal and hard maps and you can just stare at the game a lot of the time due to how the maps are layed out. Try to put the castle on the center to draw the attention to all the sides of the map.

I had trouble playing it since the sides are cut off. Do you need to update the web player size so that we can see everything?