Hey Buffalophil, i know you said to post in the arcade section but i didnt want to make a massive wall of text there.
I can see another of your (good) influences from the Nes in this one. Ghouls and ghosts : Not only with the run and armour effect but the difficulty.
The game plays really smoothly, watching the youtube video doesnt do your game justice imo. I had a totally different experience to what i was expecting.
One issue with the controls, if you are moving diagonally - ie 2 movement keys pressed, often you cant attack. Im not sure how to fix it unfortunately (your probably also aware of it but have learned to manage).
Also, i am notorious for this - but were the controls explained somewhere? I couldnt figure out how to shoot arrows.
When you implement the shop ill definately be back to play this.