I liked audio and art, they are nicely fit in this game! i think gameplay can be interesting, but maybe u should look to this game in another "plane".
What if this game can be more than runner, what if it can be story telling game with adventuring quest by quest, but will have combat system like u did? I think it will be nice to play in such game - talking with characters, taking quests with cozy mini games or collecting different items for quest, confronting with enemies and bosses in world in the way how u did this game, like a fight desk in deck builder games.
You did a great job, good luck with this project!
I will be glad if u play my game too <3