I have the requirements and instructions for beating Puftoss below.
Bananas needed to enter
boss: 250
Kong to use
for the boss: Lanky Kong
Special abilities
needed for the boss: None
To beat Puftoss, circle around him going
through all of the DK stars. Dodge the fireballs that will no doubt try
to hit you. When you go through them all in the time limit you're given,
you'll shock him.
After a few hits, Puftoss will start sending
out shockwaves. Dodge them by staying on the outside of the course. When
a shockwave disappears, go through a DK star that was previously not accessable
because of the shockwave. Make sure that you go through all the DK stars
within the time limit. You'll shock Puftoss again.
Keep on going through the DK stars (it
should take 5 or 6 rounds) until you beat him for good!
Result of returning
this boss key: Access to the fifth level