I liked your into scene a lot :D
Your controls could use some work. Jumping was sometimes not working for me.
Sadly I could not progress in the first level after obtaining the dash.
See picture. https://ibb.co/yPWjfJ6
I could not get up there.
In addition jumping from slopes was quite a hard. Because moving down slopes leaves the player not grounded.
Nevertheless you made a good character controller. He does not feel floaty or hard to control.