Hey, came here to beat "The Mage", and I can proudly say: I DID IT :) Screenshot 2023-01-20 170338.jpg
I think that your game is amazingly polished gameplay wise. Sure, the visuals are basic, but it feels very precise and satisfying to play. It could use some quality of life improvements like better indicators for the shield strength (it is barely visible when its almost gone. Also I dont see how long exactly it takes until its back), but thats very common for game jam entries.
The difficulty is really high for a jam game, but I totally see how that is something at the core of your game. It leaves you room to improve yourself and you can actually feel getting better. That is something I can very much appreciate in games. My victory over "The Mage" gave me an amazing feeling I usually only find in souls-likes.
The time and determination required to master your game is above average in jam entries which is why I feel most people dont finish it. Don't worry about it too much. If you want more people to finish the game make it easier and more approachable (in-game tutorials, more QOL polishing, etc.).
Good job!