Thanks for the feedback!
The player's movement speed, dash and attack are points that we would have liked to been able to refine further, but due to the time limitations we weren't able to get to it. All the points you mentioned are things we have gotten a fair amount of helpful feedback about and have tried to address them with an update that will be coming out after the jam closes.
Also, I'm really pleased to hear you liked the music as I'm pretty proud of how it turned out given the limited amount of time I had. (I'm adding another track when we update the game!)
Thanks for playing and thanks again for the feedback!