Hey,
I took the time to play and stream your game, if you're curious: https://www.twitch.tv/videos/1536364115, around 13:50 I started playing your game.
The game works without any problem and you can have fun with it, so, congrats!
A few things you may already know that would make your game better :
-Scale up the sword hitbox, I think the only way to play is to hit will going away, it's a bit weird
-Obv adding more animations
-Add some counter of the number of monsters remaining!
But nothing game-breaking and as I read, if you're not used to doing that kind of work/didn't have much, you can be proud of finishing a game!