The game is pretty cool, the art is retro adn cute, the aniamtions are very well and done and the sounds help with the retro or SNES game fellinf the game has.
It would be cool to see the idea developed a little more in the future, maybe give it an story (and maybe, this is just an idea of mine, make the sword be alive, so it's an actual character, maybe something like it's kind of your buddy but it's cursed to also be your enemy). And obviously some stuff like new levels, mechanics, and some use for the money you gain, like maybe upgrades or abilities, or maybe getting money is How you progress in the game.
In general is a very simple but fun game with good pixel art and good sfx and music for a jam game, the only gripe I have with the game is that, to me atleast, the sword should not move directly where the player was standing, but instead move forward a little bit so have a little bit more of time to move and ti also gives the sword a felling of weight. Also i personally found it difficult to move in the level because having to dodge the archers while dodging the GIANT sword is kinda hard.
Hope this bible of text helps you! :)