I didn't realize how terrifying the sonic spin dash sound effect is when it's used against you.
I really like your core mechanic, and I appreciate the quick, hands-on tutorial! My only complaint is that I didn't feel like I got much benefit from the first two powers - it was typically easier to just unload my basic attack on enemies. Maybe something related to movement or defense that would help me specifically against the new enemies introduced after each power (the speeding armadillo and the bullet hell frog) would've worked better.