Overall I love the idea and think it is a really solid entry. The art is nice and the sound design is fine too.
The controls themselves could be improved, Having to double jump to dash is a bit weird and even then it doesnt trigger, I think having either sprint or dash would be much better. I would also prefer a different button for sword, J I thought was maybe a bit weird.
But even still the controls were smooth enough to enjoy the game. So the game is really nicely done.