That was a very cool demo! The art is beautiful, the atmosphere is relaxing, and the abilities are fun to use together.
The extra jumps HUD after a successful dash attack is both stylish and helpful—it made the worm boss easier to avoid.
White cannonballs and white cats are a bit hard to see against the cloudy backdrop.
I found that it's possible to get stuck if you cancel out of rolling into a tunnel at the last possible moment. I was able to reproduce it and recorded a video of it.
All-in-all, great work! I can't wait to see what's in store.