Congratulations for making the game in such a short time! I like the idea of building a dungeon for adventurers to enjoy.
I can't rotate straight rooms somehow (other rooms work fine).
A few more sounds could make the game feel more alive: adventurer moving, fighting, monsters roaring, chest opening, money clinging (!!!).
Also, it would be nice if you find the correct setting to keep your pixel art crisp when scaled. Usually it's called "nearest neighbor interpolation" in image processing softwares, but it could simply be labeled "pixel art" in a game engine.