Change the gravity bar in the top left corner to change how high you jump. (-3 is low jumps, -0.5 is normal, and -0.2 is high) Press the green button on the boss's head 3 times to defeat him, but make sure you avoid the fireballs!
Credit to TheFatRat for the song (Every platformer I've ever made has had a TheFatRat song in it) Can we get 25 likes? Likes: 3 :( Fire & Ice - https://scratch.mit.edu/projects/299404362/