Pretty cool game! I was breezing along until I missed a green platform and then stuff started to go downhill pretty quick. The game gets pretty exciting as it gets faster!
The art is really cute. The sound design is also cool (although maybe you could have some variations for the enemy eating a mutation, since it can get a bit repetitive once you're losing). I really liked the music.
In terms of constructive criticism, I often found the dash a bit unreliable (or, at least, I didn't really understand it, since sometimes I felt like it didn't take me to where I wanted to go). This makes the platforming a bit difficult once the level starts getting harder, so it might be worth teaching the player a bit before the game.
Overall, the game works well! Keep up the good work!