Good job! I like the graphic and aduio, espically the fire sound effect, very fun. And also very beautiful pixel art!
One question that is it seems like only I use mouse clik the items so I can use them? It has a bit of operation sparate, as I cannot use Items when I combat with enemies, espically the hammer. I think it would be better use mouse left and right to fire, instead of "J" and "K".
But overall, Nice work!