The vibes were immaculate, and I as an amateur coder can only admire the combat system. There are only a few things I would suggest:

1. Health bars! The boss fight is so long that it feels kind of annoying to fight for two minutes, have no idea how far you came and then die. This is a must for the QoL and enjoyment of this game.

2. You made an enemy, use it! Have longer levels before the bossfight, make use of the platforming mechanics you implemented.

3. If you spend more time on the game, writing a short story justification for why exactly there are enemies on the path from a child to their father would do a lot to lift the current cloud of confusion around the game's story.

Overall, I hope you develop this further! This can go a long way.

(Please take pity on a poor soul who couldn't port his game to wasm and go play my game here: https://sixten-bergman.itch.io/grandmasgarden)