I had fun with this one. Very fun game, cute graphics, and nice mechanic for moving/attacking. I liked the tradeoff between wanting to be close to enemies in order to have better aim, versus wanting to keep goblins at a distance so as not to get hurt. The boss fight was also very fun.
One thing though was that I thought everything except the boss fight was almost too easy/cheese-able. For example, maybe the goblins could aggro when either you or the sword gets too close, so that you can't just stand at a distance and snipe them while they stand still.
I will say, too, that for me, in Firefox, the backgrounds didn't load and so I was confused for a bit until I switched to Chromium. Maybe that's a me problem, but maybe worth looking into; I almost didn't keep playing because I thought the game was just bugged. I'm glad I tried out the other browser, though, because the game was a lot of fun.
Great work!