Very cute, love the aesthetic, BUT some things stick out. Some enemies share the same color pallet with the floor, and that makes them less visible (black outline doesn't help). I understand the idea behind black outlines on the columns, but it's a bit jarring how the rest of the column outline is not black.
Character collision box is a bit too big - sometimes I couldn't walk through doors since I got stuck on the door frame and had to reposition myself. Saves are broken. I dig the idea of items and cards, though cards feel a tiny bit underpowered considering you can get straight character upgrades.
Feels a bit buggy and undercooked, but extremely promising. I love your take on a zelda-like, looking forward to more!