This is one of my favourite games that I've played so far in the jam. The mechanics are beautifully simple, but play really nicely into the game, forcing you to adapt to the weapons given. Also, the fact that you have to pick up gold to progress is also a lovely way to encourage players to get into harms way.
My only feedback is likely something you've already thought about and couldn't do because of time, but I think the game would be great with some more enemy variety. But I could genuinely see this becoming a bigger, fuller, game.
In summary: I loved it. Great work. (I even forgot to mention to cute little character and animation)