Very cute! The rooms were well designed, the artwork was great, and once I figured out how to heal properly I made it to the treasure room. I’m very impressed that you used your own engine as well. Adding the use of AoE spells or projectiles in the battling could be cool, allowing for the layout of the rooms to have an impact on gameplay.
A minor nitpick - the audio could maybe be improved a bit, although it does fit the style of game and doesn’t necessarily distract from what is a very enjoyable experience.
Great work!