These are all very fair points. I actually wanted to replace the sword with a shield in an update, I changed the mechanic to a defense-like thing right at the end and I didn't have time to tweak the assets.
Regarding movement and interacting with items, I was very worried about players struggling to understand that concept, but I couldn't figure out a clean way to show it (without using an annoying pop-up window) in time for the jam.
Thanks for taking the time to write this and record the video!