Bug the elevator operator to make it go down, and make a difficult jump to reach a room with four eye-switches. Position yourself to hit all four at once. Learn to control fire.
Bash the rock; take it all the way to the switch, even over an invisible bridge. Doing so makes the torches light up, which will be needed for the cannon.
Fire the cannon at the right time to open a path. Blow wind in the right direction to move the fiery orb. Then bring all the ingredients to the chef and ring the bell 8 times, once for each head...
Now for the action: Make three heads each drink twice, while they're roaring blue air. Attack the bell. Then, stun heads with drink and then bash them, slash them, and/or attack with fire from where the bell was.
Susano's part is a little difficult, since the heads move and you need to succeed at striking them seven times in a row. Is it the end of the game? Heh, of course you know it's not.