Thank you and glad you enjoyed it!
Yeah there was a little bit more background logic to the dashes and didn't have a straight forward way to explain them other than through experience, but yeah maybe a longer tutorial would had been ideal, or better introduction throughout the levels
To put it brief, dashes will deal damage as long as you are at level 2 or higher (shiny head), it's just that some enemies require more than 1 hit (such as the big dudes), or may have a vulnerable state (such as the trash cans)
Thank you for your feedback!