Step One: You should arrive at this scene
Step Two: ...the barrel is left of the 'O' and
at sometime during the level. Do not shoot
blast out of the barrel. It will send you...
towards the 'O' and the next blast barrel.
Instead, wait until...
Step Three: ...to a hidden barrel. Blast into the wall and you will
access the bonus room!
Second Bonus Room
Step One: Just after the halfway mark, you
Step Two: ...jump to the left to the platform.
will find you way to this scene. Cartwheel
jump with Diddy and kill the bouncing
Kremling on the right of the picture. Once
you do that, pick up the TNT barrel and...
Step Three: ...break open the wall to access the bonus room!