Had really fun playing this... Hacking around is oddly satisfacting. :) I was a bit dissapointed though when I first got through the gate, I mean 1000 gold is good, but I was hoping to find more monsters or something behind that gate.
I think you should continue developing this game. It is a good start. Add more monster types & levels. Popping damage numbers when you hit something and also popping numbers for gold when player has destroyed something. I can see this would work well as a mobile game.