In WORLD 3, STAGE 1 go in the 1st door. Don't eat the bunny,
but instead follow it from the top. The bunny will hop, then it's
back will be showing, then it will disappear! Enter the place
where it vanished and you'll find star pieces and a 1-up.
If you are down on health, call out your helper. Doing this
will reduce your life by half of one, but eat him to regain a
whole block .
In Stage2 level 4, go to the far right of the room where all the big black balls drop. Pass the real door, and go to the last platform with no door. Stand in the middle and press up.