The game loop is very fun. There is some inventory management there that I'm not sure what I think of. Could work with and could work without.
I dropped an item on top of the enemy because I held the shift but wanted to attack, which made it hard to retake. Picking up items seem to first check the square you are on, and then the one ahead. This is confusing since you might want to take up the thing you see and not the one you stand on. It could make the item management easier not taking up the one you stand on I think.
For the jam I think the amount of levels was ok, and it made for a rather quick experience. I wouldnt want it to be any longer. Maybe because I kinda felt I was doing same thing over and over and was satisfied.
Good job!