The art for this is excellent! I am also amazed at how much you've managed to fit in for a 7 day jam!
If there's any feedback I can give in terms of changes to make, it'd be to add some kind of UI that appears when you hover over your items during a run that gives you a short description of what they do.
Also, if the game was to get updated, you should add animations for attacks to give more feedback to the player. It could also help to make it clearer that the player still attacks when healing or shielding, which I didn't fully understand until after my first run.