The characters look really good, but they are so small! Increasing a size a bit would really make it more easier to enjoy the cool sprites.
Impressive that you could pull of a multiplayer mode in such a short time, too bad I couldn't test it (no games open, and of course in the few minutes I player noone else joined).
The hitboxes are really strange. I can't really hit anything if it's not really close. Also I would expect that firing an arrow would hit the spot where my mouse points to, but that is not the case. Having some kind of marker where your arrow lands would make this much more easier (maybe too easy? hard to say).
Different enemy types seem like a cool idea but most of the times the enemy archer basically couldn't hit me. Of course too much accuracy would also be bad. Maybe all enemy archers coordinate, target an area (that also gets marked beforehand) and then after ~30 seconds kill everyone in that area? Players would need to move and could even use it to kill enemies.