This is really good! The gameplay was great, the selection of weapons felt quite unique with every weapon having some viability, the trade options for progress mechanic gave a layer of strategy to this game and fit the theme nicely. All the songs you used were bangers, especially the boss theme, the sound effects are nicely used. The art in this game looks great, and this is coming from a man who usually doesn't like double thick outlines in pixel art, I wish I could explore this castle myself. I only have two complaints 1. The lack of a proper ending as you just get stuck in the boss room once you beat them and collect the key. 2? You left me wanting more! This is easily a favorite of mine in this jam and I would l love it if you would expand on this in the near future.